Alternatives to Blockly

Compare Blockly alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Blockly in 2024. Compare features, ratings, user reviews, pricing, and more from Blockly competitors and alternatives in order to make an informed decision for your business.

  • 1
    Webix

    Webix

    Webix

    JavaScript UI library and framework for speeding up web development. JS Framework for cross-platform web Apps development 102 UI widgets and feature-rich CSS / HTML5 JavaScript controls. Save at least 3000+ development hours by using ready-made widgets and UI controls. Develop Web UI 30% faster. We have accumulated the best design ideas. We have meticulously considered UX of each Webix component for five conceptual designs. Our support service specialists know everything about our library and can help you solve any problem. We also have an official support forum where you can discuss issues with our developers. By using Webix JS framework you receive an elegant and lightweight code based on object-oriented programming concepts. Associate your project with jQuery JavaScript library, MVC frameworks AngularJS, React, Vue.js, Backbone.js, third party UI extensions.
  • 2
    WinJS

    WinJS

    WinJS

    Microsoft is committed to making sure that WinJS continues to run for existing customers. At this time we don't have plans to invest in new features or feature requests. Bug fixes will be limited to correcting substantial issues that are blocking customer deployments. We may also consider bug fixes to help our customers maintain their existing WinJS-based apps. You can contribute by reviewing and sending feedback on code checkins, suggesting and trying out new features as they are implemented, submitting bugs and helping us verify fixes as they are checked in, as well as submitting code fixes or code contributions of your own. Note that all code submissions will be rigorously reviewed and tested by the team, and only those that meet an extremely high bar for both quality and design appropriateness will be merged into the source.
    Starting Price: Free
  • 3
    Leaflet

    Leaflet

    Leaflet

    Leaflet is the leading open-source JavaScript library for mobile-friendly interactive maps. Weighing just about 42 KB of JS, it has all the mapping features most developers ever need. Leaflet is designed with simplicity, performance, and usability in mind. It works efficiently across all major desktop and mobile platforms, can be extended with lots of plugins, has a beautiful, easy-to-use, and well-documented API, and a simple, readable source code that is a joy to contribute to. Leaflet doesn't try to do everything for everyone. Instead, it focuses on making the basic things work perfectly. Hardware acceleration on mobile makes it feel as smooth as native apps. Utilizing CSS3 features to make panning and zooming really smooth. Smart polyline/polygon rendering with dynamic clipping and simplification makes it very fast. The modular build system for leaving out features you don't need. Tap delay elimination on mobile.
    Starting Price: Free
  • 4
    Omniscient

    Omniscient

    Omniscient

    Do fast top-down rendering of views while thinking functional programming. Allow your views to be predictable, naturally separated, and composable, but still performant. Omniscient is to React as memoize is to the Fibonacci function. Functional programming for UIs. Memoization for stateless React components. Top-down rendering of components (unidirectional data flow). Favors immutable data (with Immutable.js). Encourages small, composable components, and shared functionality through mixins. Natural separation of concern. Components only deal with their own piece of data. Efficient and centrally defined. In its simplest form, an Omniscient component is a Stateless React Component, but more optimized. Omniscient is just as much a way to think when you are building applications as a library itself. As Omniscient is wrapped in a UMD you can use it many different ways, through CommonJS, AMD, or just through the window object.
    Starting Price: Free
  • 5
    Stacks.js
    Clarity is a programming language that brings smart contracts to Bitcoin. It’s optimized for security and predictability, and it gives developers a safe way to build complex smart contracts. Clarity is designed for high-stakes code where bugs are not an option. Modular core packages for identity, authentication, storage, transactions, stacking, and more. JS bindings for integrating with the Hiro Wallet for Web and leveraging all Stacks blockchain features. Rapidly integrate Clarity smart contracts into your apps.
  • 6
    Telerik DevCraft
    Get 1,250+ .NET and JavaScript components for building feature-rich and professionally designed web, desktop, and mobile apps in less time and with fewer efforts. Plus, complete .NET embedded reporting. Standardize the look and feel of your applications across the board. Out-of-the-box themes and limitless customization options allow you to quickly present a professional, well-packed frontend to your users. Simplify your everyday software development tasks. Cut down with up to 50% development time, increase productivity, and follow the latest technology and user experience trends. Review demos, tutorials, feature descriptions, code samples, and detailed APIs. Benefit from leading support even during your free trial, extensive documentation, and community forums. Enjoy the finest and most complete software development tooling collection with .NET and JavaScript UI components for web, desktop, and mobile applications, reporting and report management solutions, automated testing, etc.
    Starting Price: $1,299 per developer
  • 7
    Vue.js

    Vue.js

    Vue.js

    Builds on top of standard HTML, CSS and JavaScript with intuitive API and world-class documentation. Truly reactive, compiler-optimized rendering system that rarely requires manual optimization. A rich, incrementally adoptable ecosystem that scales between a library and a full-featured framework. Vue is a JavaScript framework for building user interfaces. It builds on top of standard HTML, CSS and JavaScript, and provides a declarative and component-based programming model that helps you efficiently develop user interfaces, be it simple or complex. Vue extends standard HTML with a template syntax that allows us to declaratively describe HTML output based on JavaScript state. Vue automatically tracks JavaScript state changes and efficiently updates the DOM when changes happen. Vue is a framework and ecosystem that covers most of the common features needed in frontend development.
  • 8
    Million.js

    Million.js

    Million.js

    Million.js introduces a novel "block" virtual DOM. It's significantly faster than React's virtual DOM, as it diffs data instead of the DOM. Million.js uses a custom compiler that automatically optimizes your React components on the server. Tired of learning new frameworks and big migrations? Million.js ships a drop-in automatic mode to make your React apps faster, without any code changes. We use a novel approach to the virtual DOM called the block virtual DOM. You can read more on what the block virtual DOM is with virtual DOM, back in block and how we make it happen in React with behind the block(). We are actively working on removing these limitations. It's also important to note that your application may not need Million.js – if your app is not UI heavy, you may not see much performance improvement.
  • 9
    Bideo.js

    Bideo.js

    Bideo.js

    Bideo.js is a JS library that makes it super easy to add fullscreen background videos. Fullscreen HTML5 background video for the web. Want to play a video in the background of a container or body itself? This plugin will help you do exactly that. The video element in use will automatically adapt to the container's dimensions. It will also resize as the browser window resizes. The plugin doesn't support any overlay as it is easy to implement that with plain HTML/CSS in your code. Video might take a few seconds to load, especially because the sources are added via JS which is something you'll load after the DOM's loading. Until then, you may want to show a video cover, which will be the same as the first frame or the video (or some other image). The support for this is not in the plugin as it's fairly simple to achieve this via just HTML/CSS (just like overlays).
    Starting Price: Free
  • 10
    React

    React

    React

    React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. Declarative views make your code more predictable and easier to debug. Build encapsulated components that manage their own state, then compose them to make complex UIs. Since component logic is written in JavaScript instead of templates, you can easily pass rich data through your app and keep state out of the DOM. We don’t make assumptions about the rest of your technology stack, so you can develop new features in React without rewriting existing code. React components implement a render() method that takes input data and returns what to display. This example uses an XML-like syntax called JSX. Input data that is passed into the component can be accessed by render() via this.props.
  • 11
    Glimmer

    Glimmer

    Glimmer

    Fast and lightweight UI components for the web. Available for use within Ember.js and standalone apps. Glimmer is one of the fastest DOM rendering engines, delivering exceptional performance for initial renders as well as updates. Architected like a virtual machine (VM), Glimmer compiles your templates into low-level code so it can run as fast as possible, without sacrificing ease of use. Glimmer components can coexist with your technology stack, so you can develop new features in Glimmer components without rewriting existing code. Because Glimmer VM powers the components in Ember, there’s a battle-tested, full-stack framework waiting for you, if you need it. Just drop your Glimmer components into an Ember app. You won’t need to change a thing. Glimmer.js is actually made up of lots of small packages. Glimmer.js is the developer-facing API on top of the low-level Glimmer VM.
    Starting Price: Free
  • 12
    Moment.js

    Moment.js

    Moment.js

    A JavaScript date library for parsing, validating, manipulating, and formatting dates. Moment was designed to work both in the browser and in Node.js. All code should work in both of these environments, and all unit tests are run in both of these environments. Moment.js has been successfully used in millions of projects. As of September 2020, Moment gets over 12 million downloads per week! Moment has evolved somewhat over the years, but it has essentially the same design as it did when it was created in 2011. Moment works well on Internet Explorer 8 and higher. Some libraries are split into modules, plugins, or companion libraries. Some libraries use the ECMAScript Intl API for locales, time zones, or both. Some libraries still provide their own locale and time zone files as Moment and Moment-Timezone do. Because different locales define week of year numbering differently, Moment.js added options to get/set the localized week of the year.
    Starting Price: Free
  • 13
    Dojo Toolkit

    Dojo Toolkit

    Dojo Toolkit

    A JavaScript toolkit that saves you time and scales with your development process. Provides everything you need to build a Web app. Language utilities, UI components, and more, all in one place, designed to work together perfectly. The Dojo Toolkit Reference Guide is designed to be an in-depth resource regarding the Dojo Toolkit. The Reference Guide is a community effort and can be contributed to by anyone who has a CLA in place with the Dojo Foundation. An extensive set of widgets (user interface components) and the underlying system to support them. It is built fully on-top of the Dojo core. Various tools that support the rest of the toolkit, like being able to build, test and document code.
    Starting Price: Free
  • 14
    Kendo UI

    Kendo UI

    Progress Software

    Kendo UI is the ultimate collection of JavaScript UI components with libraries for jQuery, Angular, React, and Vue. Quickly build eye-catching, high-performance, responsive web applications—regardless of your JavaScript framework choice. Easily add advanced JavaScript components into your existing or new designs. Kendo UI’s hundreds of components handle everything you need to satisfy your users’ requirements. Add advanced components such as data grids, charts, schedulers, and calendars with just a few lines of code. Each is crafted for performance and customizability. Switching frameworks and starting new projects won’t require a new license or a big learning curve. Everything is included and up-to-date, APIs are consistent and theming is easy. Our QA process coupled with world-class support teams and a large user community means that our components will always work the way they’re supposed to—guaranteed.
  • 15
    Ignite UI

    Ignite UI

    Infragistics

    Build data-rich, responsive web apps much faster with Ignite UI - the most complete library of enterprise-grade JavaScript and .NET UI components available. Includes libraries for Angular, ASP.NET (Core and MVC), Blazor, jQuery, React, web components and more. Our advanced Command Line Interface (CLI) tools simplify the use of component libraries with multiple dependencies. While our WYSIWYG Page Designer allows you to drag-n-drop your way to a modern web experience – leveraging our JavaScript UI components, data connectors, layout and theme support to design, and code your next app. It is hard to be productive when you need to be an expert in multiple JavaScript libraries. We augment our libraries with Typescript for strong typing, class-based inheritance that makes development a lot less error-prone and easier to manage.
    Starting Price: $849 per year
  • 16
    Modernizr

    Modernizr

    Modernizr

    Modernizr tells you what HTML, CSS, and JavaScript feature the user’s browser has to offer. It’s a collection of superfast tests, or “detects” as we like to call them, which run as your web page loads, then you can use the results to tailor the experience to the user. All web developers come up against differences between browsers and devices. That’s largely due to different feature sets, the latest versions of the popular browsers can do some awesome things which older browsers can’t, but we still have to support the older ones. Modernizr makes it easy to deliver tiered experiences and make use of the latest and greatest features in browsers that support them, without leaving less fortunate users high and dry. Modernizr is a small piece of JavaScript code that automatically detects the availability of next-generation web technologies in your user's browsers. Modernizr uses feature detection to allow you to easily tailor your user's experience.
    Starting Price: Free
  • 17
    DataViewsJS

    DataViewsJS

    GrapeCity

    DataViewsJS enables you to easily and professionally customize the presentation of your data using different layouts, row templates, data fields, calculations, and editing modes that are completely and easily customizable. Leverage the powerful calc engine to perform calculations on any set of JSON data. With our calculation engine, your computing power is optimized for large data and complex calculations. DataViewsJS was designed from the start to be a fast, full-featured, and completely customizable developer tool for efficient data display and editing to meet any of your JavaScript application’s needs. Localized resources for Chinese, Japanese, and Korean are included with DataViewsJS. Additional languages can be easily added by creating your own resource files and setting them with simple script code. Modern data presentation patterns such as those you see on social networks and other sites become easy when you use DataViewsJS interchangeable layouts.
    Starting Price: $999 per year
  • 18
    JsPHP

    JsPHP

    JsPHP

    The free open-source JsPHP library. The JsPHP website is a 100% free community resource that provides a collaborative platform and web-based Integrated Development Environment (IDE) for building an open-source JavaScript library called JsPHP that provides an implementation of the PHP API for JavaScript environments. An Integrated Development Environment (IDE) is a tool for writing computer programs, and that's what the JsPHP website is a tool for creating and testing software. In the JsPHP IDE registered users can edit the JavaScript functions in the JsPHP library and can also write code to test that those functions are working properly or to test how well those functions perform (how fast they run when they are executed on the computer). If you're just starting out with learning JavaScript then helping out at JsPHP is the perfect way for you to get started because we have lots of beginner-level work that needs to be done that you could help us with.
    Starting Price: Free
  • 19
    Underscore.js

    Underscore.js

    Underscore.js

    Underscore is a JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects. Underscore provides over 100 functions that support both your favorite workaday functional helpers like map, filter, and invoke, as well as more specialized goodies like function binding, javascript templating, creating quick indexes, deep equality testing, and so on. You may choose between monolithic and modular imports. The project is hosted on GitHub. You can report bugs and discuss features on the issues page or chat in the Gitter channel. Underscore 1.x is backward compatible with any engine that fully supports ES3, while also utilizing newer features when available. Collection functions work on arrays, objects, and array-like objects. We have recent confirmation that the library is compatible with Adobe ExtendScript. There is support code present for IE 8, which we will retain in future Underscore updates.
    Starting Price: Free
  • 20
    Annotator

    Annotator

    Annotator

    Annotator is an open source JavaScript library to easily add annotation functionality to any webpage. Annotations can have comments, tags, links, users, and more. Annotator is designed for easy extensibility so it's a cinch to add a new feature or behaviour. Annotator also fosters an active developer community with contributors from four continents, building 3rd party plugins allowing the annotation of PDFs, EPUBs, videos, images, sound, and more. Adding an annotation to any website is easy with Annotator. First, download the Annotator library, and include it in your HTML. Annotator has a simple but powerful plugin architecture. Plug-ins can also be included for adding functionality such as user permissions, tags, filtering, and formatting. More than a dozen projects rely on Annotator for their digital annotation needs and many are open source. Share text and video annotations using social networks or email.
    Starting Price: Free
  • 21
    Three.js

    Three.js

    Three.js

    Three.js is a JavaScript 3D library. The aim of the project is to create an easy-to-use, lightweight, cross-browser, general-purpose 3D library. The current builds only include a WebGL renderer but WebGPU (experimental), SVG and CSS3D renderers are also available in the examples. To actually be able to display anything with three.js, we need three things, scene, camera, and renderer, so that we can render the scene with the camera. In addition to the WebGLRenderer, Three.js comes with a few others, often used as fallbacks for users with older browsers or for those who don't have WebGL support for some reason. Create a loop that causes the renderer to draw the scene every time the screen is refreshed (on a typical screen this means 60 times per second). Anything you want to move or change while the app is running has to go through the animate loop. You can of course call other functions from there.
    Starting Price: Free
  • 22
    JavaScript InfoVis Toolkit
    The JavaScript InfoVis Toolkit provides tools for creating interactive data visualizations for the web. The best way to start is to take a look at the demos page. Each demo has a See the Example Code link that takes you to the code for that example. The actual library code is included in the HTML file by building the lib each time with only the needed requirements taken from the name of the visualization and the build.json file. The required library code is built by the build.py file. In order to create a new visualization you need to set up the server environment to include test JavaScript files for your new visualization and also you need to add the new visualization files into the Source folder.
    Starting Price: Free
  • 23
    Chart.js

    Chart.js

    Chart.js

    Simple yet flexible JavaScript charting for designers & developers. Layout boxes can be stacked and weighted in groups. A secondary title plugin with all the same options as the main title. Line segments can be styled by any user-defined criteria. Transitions of every property in every element can be configured individually and independently. Numerous performance enhancements have been introduced. Mix and match bar and line charts to provide a clear visual distinction between datasets. Plot complex, sparse datasets on date time, logarithmic, or even entirely custom scales with ease. Out of the box stunning transitions when changing data, updating colors, and adding datasets. Chart.js is a community-maintained project, contributions welcome! Visualize your data in 8 different ways, each of them animated and customizable. Redraws charts on window resize for perfect scale granularity. Includes new chart axis types.
    Starting Price: Free
  • 24
    Sencha Ext JS
    Sencha Ext JS is a comprehensive JavaScript application framework for building feature-rich, cross-browser-compatible web and mobile applications. It includes a library with 140+ high-performance customizable components, a set of tools and a powerful UI Framework. Key Features Rich UI Components – Includes a variety of pre-built UI elements such as grids and trees, menus and toolbars, forms and buttons, etc. Cross-platform compatibility - Supports major desktop and mobile web browsers including IE Firefox Chrome Safari and Opera. Data Packages – Includes data components to interact with various data sources including JSON, XML and database connections. Theming and Skinning - Allow easy skinning and theming of the UI with CSS. Development Tools - Includes an extensive set of development tools including a visual designer and debugger. Large Community - Has an active and large community of developers who provide support, extensions, etc.
    Starting Price: $1,295 one-time payment
  • 25
    Algolia Places

    Algolia Places

    Algolia Community

    Fast, beautiful, and easy-to-use address autocompletion. It harnesses OpenStreetMap’s impressive open-source database of worldwide places. Delight your users by implementing a powerful address autocomplete in minutes. Simplify your checkout and users’ accounts by filling in multiple inputs at the same time. Create the best city or country selector. Stop scrolling through a list to pick a country. Help your users find it faster. Link suggestions to a map. Visualize the results at a glance by displaying them on a real-time map. Build unique search experiences with the autocomplete.js & instantsearch.js plugins for Algolia Places. A JavaScript one-liner to turn any HTML <input> into fast & beautiful address auto-complete menus. Backed by Algolia's unique ranking algorithm, Algolia Places mixes intuitively relevant local and famous places. Native support of typing mistakes thanks to the unique way Algolia handles typos and ranks results accordingly.
    Starting Price: $0.40 per 1,000 requests
  • 26
    Preact

    Preact

    Preact

    Preact provides the thinnest possible Virtual DOM abstraction on top of the DOM. It builds on stable platform features, registers real event handlers and plays nicely with other libraries. Most UI frameworks are large enough to be the majority of an app's JavaScript size. Preact is different: it's small enough that your code is the largest part of your application. That means less JavaScript to download, parse and execute - leaving more time for your code, so you can build an experience you define without fighting to keep a framework under control. Preact is fast, and not just because of its size. It's one of the fastest Virtual DOM libraries out there, thanks to a simple and predictable diff implementation. We automatically batch updates and tune Preact to the extreme when it comes to performance. We work closely with browser engineers to get the maximum performance possible out of Preact.
    Starting Price: Free
  • 27
    RequireJS

    RequireJS

    RequireJS

    RequireJS is a JavaScript file and module loader. It is optimized for in-browser use, but it can be used in other JavaScript environments, like Rhino and Node. Using a modular script loader like RequireJS will improve the speed and quality of your code. This setup assumes you keep all your JavaScript files in a "scripts" directory in your project. To take full advantage of the optimization tool, it is suggested that you keep all inline script out of the HTML, and only reference require.js with a requirejs call like so to load your script. All of them map to loading some/path/some/module.js. Ideally we could choose the CommonJS syntax, since it is likely to get more common over time, and we want to reuse code.
    Starting Price: Free
  • 28
    JointJS

    JointJS

    client IO s.r.o.

    JointJS is a powerful JavaScript diagramming library that helps developers and companies of any size build advanced visual and No-Code applications. It comes in two versions: open-source (JointJS) with limited features and professional (JointJS+), which extends the features of JointJS and offers a wide range of customizable features, ready-to-implement demo applications and white-glove support.
    Starting Price: $2990 per developer
  • 29
    PixiJS

    PixiJS

    PixiJS

    PixiJS' strength is speed. When it comes to 2D rendering, PixiJS is the fastest there is. Friendly, feature-rich API lets PixiJS take care of the fundamentals whilst you focus on producing incredible multiplatform experiences. PixiJS is and always will be open source, with a large and supportive community pushing its growth and evolution. Thousands of award-winning sites and experiences are being made with PixiJS by leading content authors around the world. PixiJS will always be free and open-source but with your support, we can grow faster together. Interactive, visually compelling content on desktop, mobile, and beyond, all reached with a single codebase to deliver transferable experiences. Beautiful anti-aliased text at native and retina resolutions means that Pixi copy is as easy on the eye as it is on any other delivery method. Organize your objects in hierarchical trees, with parent-child relationships.
    Starting Price: Free
  • 30
    DHTMLX

    DHTMLX

    DHTMLX

    DHTMLX is a JavaScript UI library that provides a set of highly customizable and flexible components for building modern and responsive web applications. The library includes more than 30 UI components, such as Gantt, Scheduler, Kanban, diagrams, charts, grids, spreadsheets, calendars, trees, forms, and more. DHTMLX helps to advance web development and build feature-rich data-intensive applications of any complexity. One of the key advantages of DHTMLX is its compatibility with different web frameworks, including React, Angular, and Vue.js, which makes it a great choice for developers who are already working with these frameworks. DHTMLX is also designed with performance in mind. Its components are optimized for fast rendering. A comprehensive and rich API provides a straightforward way to manipulate JavaScript/HTML5 UI widgets. The library has detailed API documentation, tutorials, and examples that help developers quickly get up to speed and start building their apps.
    Starting Price: $79
  • 31
    Cleave.js

    Cleave.js

    Cleave.js

    Format your <input/> content when you are typing. Cleave.js has a simple purpose, to help you format input text content automatically. Credit card number formatting, phone number formatting (i18n js lib separated for each country to reduce size), date formatting, numeral formatting, custom delimiter, prefix and block pattern, CommonJS/AMD mode, ReactJS component, AngularJS directive (1.x), and ES module. The idea is to provide an easy way to increase input field readability by formatting your typed data. By using this library, you won't need to write any mind-blowing regular expressions or mask patterns to format input text. However, this isn't meant to replace any validation or mask library, you should still sanitize and validate your data in the backend. Types are contributed by the community. Types for the React component are also available and can be imported in the same way.
    Starting Price: Free
  • 32
    NativeScript

    NativeScript

    NativeScript

    Improve OSS repository management using multiple monorepo setups. Improved onboarding: tutorials for all flavors, linked from the home page. Improved Dialog handling with core-provided abstract APIs. Core: split out architectural level packages for advanced use-cases and scalability. This page will walk through installing everything you need to build your first NativeScript app. Setting up the Android development environment can be daunting if you are new to Android development, however following the next steps carefully will get you up and running in no time. Setting up the Android development environment can be daunting if you are new to Android development, however following the next steps carefully will get you up and running in no time.
    Starting Price: Free
  • 33
    MathJax

    MathJax

    MathJax

    A JavaScript display engine for mathematics that works in all browsers. Beautiful and accessible math in all browsers No more setup for readers, it just works. MathJax provides tools to transform your content from traditional print sources into modern, accessible web content and ePubs. The MathJax team is available to train your staff in using our resources for preparing online teaching material and creating accessible STEM content. MathJax is highly flexible and can be tailored to the needs of your institution by creating customized configurations and specialized software workflows. MathJax uses CSS with web fonts or SVG, instead of bitmap images or Flash, so equations scale with surrounding text at all zoom levels. MathJax is highly modular on input and output. Use MathML, TeX, and ASCIImath as input and produce HTML+CSS, SVG, or MathML as output. MathJax works with screenreaders & provides expression zoom and interactive exploration.
    Starting Price: Free
  • 34
    Backbone.js

    Backbone.js

    Backbone.js

    Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface. When working on a web application that involves a lot of JavaScript, one of the first things you learn is to stop tying your data to the DOM. It's all too easy to create JavaScript applications that end up as tangled piles of jQuery selectors and callbacks, all trying frantically to keep data in sync between the HTML UI, your JavaScript logic, and the database on your server. For rich client-side applications, a more structured approach is often helpful. With Backbone, you represent your data as Models, which can be created, validated, destroyed, and saved to the server.
    Starting Price: Free
  • 35
    Marionette

    Marionette

    Marionette

    Organize your app in terms of small Views. Marionette makes it easy to compose rich layouts out of small components. We've added tons of features from templateHelpers, to a declarative UI hash, that will keep you from ever wanting to go back. Share complex UI interactions across views. Behaviors are like mixins, without all of the pain associated with property collision. Decoupled communication between your application components with a powerful messaging system. Write classes with the same API as your views. Marionette Objects support features like extend, events, initialize, and more. Marionette community is home to the most welcoming and vibrant discussions in the Backbone ecosystem. Stop spending more time thinking about your framework than your app. Marionette will never get in the way of you and your code.
    Starting Price: Free
  • 36
    Velocity.js

    Velocity.js

    Velocity.js

    Velocity is an animation engine with the same API as jQuery's animate. It works with and without jQuery. It's incredibly fast, and it features color animation, transforms, loops, easings, SVG support, and scrolling. It is the best of jQuery and CSS transitions combined. Download Velocity, include it on your page and replace all instances of jQuery's animate with velocity. You will immediately see a performance boost across all browsers and devices, especially on mobile. Velocity works everywhere, back to IE8 and Android 2.3. Under the hood, it mimics jQuery's queue, and thus interoperates seamlessly with jQuery's animate, fade, and delay. Since Velocity's syntax is identical to animate, your code doesn't need to change. JavaScript and jQuery are falsely conflated. JavaScript animation, which Velocity uses, is fast; it's jQuery that's slow. Although Velocity works alongside jQuery, it uses its own animation stack that delivers its performance.
    Starting Price: Free
  • 37
    Socket.IO

    Socket.IO

    Socket.IO

    In most cases, the connection will be established with WebSocket, providing a low-overhead communication channel between the server and the client. Rest assured! In case the WebSocket connection is not possible, it will fall back to HTTP long-polling. And if the connection is lost, the client will automatically try to reconnect. Scale to multiple servers and send events to all connected clients with ease. Socket.IO is a library that enables low-latency, bidirectional and event-based communication between a client and a server. It is built on top of the WebSocket protocol and provides additional guarantees like a fallback to HTTP long-polling or automatic reconnection. WebSocket is a communication protocol that provides a full-duplex and low-latency channel between the server and the browser. There are several Socket.IO server implementations available. And client implementations in most major languages.
  • 38
    CodeGemma

    CodeGemma

    Google

    CodeGemma is a collection of powerful, lightweight models that can perform a variety of coding tasks like fill-in-the-middle code completion, code generation, natural language understanding, mathematical reasoning, and instruction following. CodeGemma has 3 model variants, a 7B pre-trained variant that specializes in code completion and generation from code prefixes and/or suffixes, a 7B instruction-tuned variant for natural language-to-code chat and instruction following; and a state-of-the-art 2B pre-trained variant that provides up to 2x faster code completion. Complete lines, and functions, and even generate entire blocks of code, whether you're working locally or using Google Cloud resources. Trained on 500 billion tokens of primarily English language data from web documents, mathematics, and code, CodeGemma models generate code that's not only more syntactically correct but also semantically meaningful, reducing errors and debugging time.
  • 39
    Parsley

    Parsley

    Parsley

    Parsley, the ultimate JavaScript form validation library. Validating frontend forms has never been so powerful and easy. Like no other form validation library, simply write in English your requirements inside your form HTML tags, Parsley will do the rest! No need to write even a single JavaScript line for simple form validation. Parsley is now smarter, it automatically detects your forms' modifications and adapts its validation accordingly. Simply add, remove or edit fields, Parsley validation will follow! Parsley is shipped with more than a dozen useful validators. If not enough, use the awesome Parsley extra Ajax validator or tons of other extended validators provided by the community. Parsley strongly focuses on UI and UX. Override almost every Parsley default behavior to fit your exact needs. Still ships almost bug-free. Parsley is strongly tested and aims to work on every browser (including IE8).
    Starting Price: Free
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    Lodash

    Lodash

    Lodash

    A modern JavaScript utility library delivering modularity, performance, and extras. Lodash is released under the MIT license and supports modern environments. Lodash makes JavaScript easier by taking the hassle out of working with arrays, numbers, objects, strings, etc. Lodash’s modular methods are great for Iterating arrays, objects, and strings, manipulating and testing values, as well as creating composite functions. Lodash is available in a variety of builds and module formats. futil-js is a set of functional utilities designed to complement Lodash. Tested in Chrome 74-75, Firefox 66-67, IE 11, Edge 18, Safari 11-12, and Node.js 8-12. Determine the lowest index at which value should be inserted into an array in order to maintain its sort order. Methods that operate on and return arrays, collections, and functions can be chained together. Methods that retrieve a single value or may return a primitive value will automatically end the chain sequence.
    Starting Price: Free
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    Masonry

    Masonry

    Masonry

    Masonry is a JavaScript grid layout library. It works by placing elements in optimal position based on available vertical space, sort of like a mason fitting stones in a wall. You’ve probably seen it in use all over the Internet. All sizing and styling of items is handled by your own CSS. Item sizes can be set with percentages for responsive layouts. Unloaded images can throw off Masonry layouts and cause item elements to overlap. imagesLoaded resolves this issue. imagesLoaded is a separate script you can download. You can initialize Masonry in HTML, without writing any JavaScript. All options are optional, but column width and item selection are recommended. Align items to a horizontal grid. Use element sizing for responsive layouts with percentage widths. Element sizing options allow you to control the sizing of the Masonry layout within your CSS. This is useful for responsive layouts and media queries.
    Starting Price: Free
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    Polymer

    Polymer

    Polymer

    The Polymer library provides a set of features for creating custom elements. These features are designed to make it easier and faster to make custom elements that work like standard DOM elements. Similar to standard DOM elements, Polymer elements can be instantiated using a constructor or document creation element, configured using attributes or properties, populated with internal DOM inside each instance, responsive to property and attribute changes, styled with internal defaults or externally, and responsive to methods that manipulate its internal state. Registering an element associates a class with a custom element name. The element provides callbacks to manage its lifecycle. Polymer also lets you declare properties, to integrate your element's property API with the Polymer data system. Shadow DOM provides a local, encapsulated DOM tree for your element. Polymer can automatically create and populate a shadow tree for your element from a DOM template.
    Starting Price: Free
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    Popper

    Popper

    Popper

    Positioning tooltips and popovers are difficult. Popper is here to help! Given an element, such as a button, and a tooltip element describing it, Popper will automatically put the tooltip in the right place near the button. It will position any UI element that "pops out" from the flow of your document and floats near a target element. The most common example is a tooltip, but it also includes popovers, drop-downs, and more. All of these can be generically described as a "popper" element. Click on the dots to place the tooltip. There are 12 different placements to choose from. Pure CSS poppers will not be prevented from overflowing clipping boundaries, such as the viewport. It will get partially cut off or overflows if it's near the edge since there is no dynamic positioning logic. When using Popper, your popper will always be positioned in the right place without needing manual adjustments.
    Starting Price: Free
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    Multiple.js

    Multiple.js

    Multiple.js

    An experiment in sharing background across multiple elements using CSS. If you want to accomplish a "background sharing across multiple elements" effect in HTML/CSS without any coordinates processing by JavaScript, Multiple.js is the answer. Note that icons and text at lighter layers have gradient-color from darker layers, creating the illusion of an underlying violet layer. In addition to that, layers pass the background image (girl) with equal transparency so that layers can not be superimposed on each other. All these things can be implemented in CSS. Add a gap between elements to make sure that the background remains in the same position. Toggle background image/gradient to get idea how it looks. Miss random layers to make sure that elements are independent. Expands background to viewport's size and displays in every element appropriate chunk, exactly what is needed! Background can be successfully expanded to full viewport size.
    Starting Price: Free
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    Verge3D

    Verge3D

    Soft8Soft

    Verge3D® is a powerful and intuitive toolkit that allows Blender, 3ds Max, or Maya artists to create immersive web-based experiences. Verge3D can be used to build interactive animations, product configurators, engaging presentations of any kind, online stores, explainers, e-learning content, portfolios, and browser games. The high-tech 3D web technology becomes accessible with Verge3D. Your exquisite content will live on your website being appreciated by the billion-sized Internet population. Interactivity, including the true 360° view, zoom, and animation, will bring an entirely new level of engagement to your creations. It will work everywhere, from a small smartphone to a workstation and even a TV set. We designed and assembled all the tools you need in one place and called it Verge3D. Find out how Verge3D can transform your business and differentiate your enterprise from the rest of the industry!
    Starting Price: $290
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    Voca

    Voca

    Voca

    The Voca library offers helpful functions to make string manipulations comfortable: change case, trim, pad, slugify, latinise, sprintf'y, truncate, escape and much more. The modular design allows to load the entire library, or individual functions to minimize the application builds. The library is fully tested, well documented and long-term supported. Provides the complete set of functions to manipulate, chop, format, escape and query strings. Voca is compatible with ES2015 modules to import the entire library.
    Starting Price: Free
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    WebDataRocks

    WebDataRocks

    WebDataRocks

    WebDataRocks is a simple free JS library for creating functional and easy-to-use pivot tables. It can be used with Angular, Vue, React or any other framework. Free Flexible in customization JavaScript based client-side component Loads 1MB of JSON or CSV data files Full set of enterprise features Integration with 3rd party charting libraries Full set of enterprise features Features like filtering, sorting, grouping, conditional and number formatting, calculated values, totals are available for efficient work with your data. It supports printing or exporting web report to PDF, Excel or HTML with just one click. Ready-to-use modern UI The tool offers a classy spreadsheet-like interface optimized both for browsers and apps. All principles of reliability and excellent user experience are already implemented in this web reporting tool.
    Starting Price: Free
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    Screenfull.js

    Screenfull.js

    Screenfull.js

    Simple wrapper for cross-browser usage of the JavaScript Fullscreen API, which lets you bring the page or any element into fullscreen. Smoothens out the browser implementation differences, so you don't have to. If you cannot use ESM or need to support older browsers without using transpilation, use version 5.2.0. Only 0.7 kB gzipped. Also available on cdnjs (older version). Safari is supported on desktops and iPad, but not on iPhones. This is a limitation in the browser, not in Screenfull. Fullscreen the page or fullscreen an element. Hide the navigation user interface on mobile devices. Fullscreen an element with jQuery and toggle fullscreen on an image with jQuery. Detect fullscreen change, remove listeners, detect fullscreen errors, and fullscreen elements with Angular.js. Keep in mind that the browser will only enter fullscreen when initiated by user events like click, touch, or key.
    Starting Price: Free
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    SpreadJS

    SpreadJS

    GrapeCity

    Deliver true Excel-like spreadsheet experiences, fast - with zero dependencies on Excel. Create financial apps, dashboards, charts, pivot tables, performance benchmarks, science lab notebooks, and other similar JavaScript spreadsheet applications. JavaScript spreadsheet components are software elements that help developers add Excel-like functionality to web applications. SpreadJS is a suite of JavaScript spreadsheet controls that includes import/export, data inputs, cell customization, and an extensive calculation engine with over 500 functions. With over 25 years of experience in creating award-winning spreadsheets for professional developers, we already know what you want and need. No other spreadsheet vendor can match that. Put our spreadsheet experience to work for you today.
    Starting Price: $1,499 per developer
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    jQuery

    jQuery

    jQuery

    jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers. If you're new to jQuery. Return a collection of matched elements either found in the DOM based on passed argument(s) or created by passing an HTML string. All the aspects of the API that were deprecated in the corresponding version of jQuery. These methods get and set DOM attributes of elements.