Alternatives to RequireJS
Compare RequireJS alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to RequireJS in 2026. Compare features, ratings, user reviews, pricing, and more from RequireJS competitors and alternatives in order to make an informed decision for your business.
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1
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. -
2
Essential Objects
Essential Objects
Quickly extend your .NET application with PDF file generating/processing ability, or seamlessly integrate the popular Chromium browser engine both for UI or background task with extensive customization options such as custom resource loader and JavaScript extension. Not suitable for newer ASP.NET framework such as MVC, but perfect for maintaining legacy WebForm code/modules in a larger MVC application. Add browser capacity in Windows.Forms and WPF app simply by drag and drop. Extensive customization options for UI, resource loader and JavaScript interface. Support .Net Framework 2.0 and above, .NET Core 3.0 and above.Starting Price: $799 one-time payment -
3
JavaScript InfoVis Toolkit
SenchaLabs
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 -
4
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 -
5
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 -
6
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 -
7
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 -
8
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 -
9
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.Starting Price: $899 -
10
TypeScript
TypeScript
TypeScript adds additional syntax to JavaScript to support a tighter integration with your editor. Catch errors early in your editor. TypeScript code converts to JavaScript, which runs anywhere JavaScript runs: In a browser, on Node.js or Deno and in your apps. TypeScript understands JavaScript and uses type inference to give you great tooling without additional code. TypeScript was used by 78% of the 2020 State of JS respondents, with 93% saying they would use it again. The most common kinds of errors that programmers write can be described as type errors: a certain kind of value was used where a different kind of value was expected. This could be due to simple typos, a failure to understand the API surface of a library, incorrect assumptions about runtime behavior, or other errors.Starting Price: Free -
11
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.Starting Price: $848 -
12
Anime.js
Anime.js
Anime.js is a lightweight JavaScript animation library with a simple, yet powerful API. It works with CSS properties, SVG, DOM attributes, and JavaScript Objects. Follow through animations made easy. Anime's built-in staggering system makes complex follow-through and overlapping animations simple. It can be used on both timings and properties. Animate multiple CSS transforms properties with different timings simultaneously on a single HTML element. Play, pause, control, reverse and trigger events in sync using the complete built-in callbacks and controls functions. Anime.js works with anything web. CSS, SVG, DOM attributes and JavaScript Objects, animate everything with a single unified API. Staggering allows you to animate multiple elements with follow-through and overlapping action. Animation keyframes are defined using an Array, within the keyframes property. Each keyframe duration will be equal to the animation's total duration divided by the number of keyframes.Starting Price: Free -
13
CoffeeScript
CoffeeScript
Underneath that awkward Java-esque patina, JavaScript has always had a gorgeous heart. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way. The golden rule of CoffeeScript is: “It’s just JavaScript.” The code compiles one-to-one into the equivalent JS, and there is no interpretation at runtime. You can use any existing JavaScript library seamlessly from CoffeeScript (and vice-versa). The compiled output is readable, pretty printed, and tends to run as fast or faster than the equivalent handwritten JavaScript. Most modern JavaScript features that CoffeeScript supports can run natively in Node 7.6+, meaning that Node can run CoffeeScript’s output without any further processing required. This list may be incomplete, and excludes versions of Node that support newer features behind flags; please refer to node.green for full details. You can run the tests in your browser to see what your browser supports.Starting Price: Free -
14
Roy
Roy
Roy is an experimental programming language that targets JavaScript. It tries to meld JavaScript semantics with some features common in static functional languages.Starting Price: Free -
15
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 -
16
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 -
17
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 -
18
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 -
19
Javascript Obfuscator
Javascript Obfuscator
JavaScript Obfuscator transforms readable JavaScript source code into an obfuscated and unintelligible form, preventing reverse engineering, tampering, and intellectual property theft while preserving full functionality and compatibility with the latest ECMAScript versions. It includes powerful features such as minification and compression for reduced file size and faster load times, dead code insertion to confuse static analysis, and domain- or IP-based locking to disable code execution outside authorized environments. The tool provides GUI-driven desktop batch processing that allows users to protect JavaScript embedded in HTML, PHP, JSP, or similar files with just a few clicks, and supports keeping initial comments or inserting custom headers into output files. Advanced controls let you exclude certain names from obfuscation and ensure consistent symbol renaming across multiple files.Starting Price: Free -
20
blanket.js
Blanket.js
A seamless JavaScript code coverage library. Blanket.js is a code coverage tool for JavaScript that aims to be easy to install, easy to use, and easy to understand. Blanket.js can be run seamlessly or can be customized for your needs. JavaScript code coverage compliments your existing JavaScript tests by adding code coverage statistics (which lines of your source code are covered by your tests). Parsing the code using Esprima and node-falafel, and instrumenting the file by adding code tracking lines. Connecting to hooks in the test runner to output the coverage details after the tests have been completed. A Grunt plugin has been created to allow you to use Blanket like a "traditional" code coverage tool (creating instrumented copies of physical files, as opposed to live-instrumenting). Runs the QUnit-based Blanket report headlessly using PhantomJS. Results are displayed on the console, and the task will cause Grunt to fail if any of your configured coverage thresholds are not met.Starting Price: Free -
21
JavaScript Obfuscator Pro
JavaScript Obfuscator
JavaScript Obfuscator Pro is an advanced code protection platform designed to secure JavaScript against reverse engineering and intellectual property theft. Its flagship VM obfuscation feature transforms readable JavaScript into custom bytecode executed by a proprietary virtual machine. This approach removes standard JavaScript structures entirely, making static analysis and decompilation extremely difficult. Each obfuscation run generates unique bytecode and a custom VM, ensuring no reusable deobfuscation patterns exist. JavaScript Obfuscator Pro supports layered security by combining VM obfuscation with additional protection techniques. The platform works through a simple web interface or API, allowing developers to protect code in just a few steps. JavaScript Obfuscator Pro is built for scenarios where maximum code secrecy is required. -
22
PlayCode
PlayCode
The #1 JavaScript playground and sandbox to write, run and repl it. JavaScript playground is perfect for learning and prototyping javascript sandboxes. Fast and easy to use. Start a JavaScript playground project using ready-to-use templates. JavaScript is one of the most popular languages for web development. It is needed in order to make web pages alive. Today JavaScript can be run not only in the browser but also on the server. Learning, practicing and prototyping is much easier right in the javascript playground because the browser is designed to run javascript. This is the perfect coding IDE. In turn, PlayCode tries to use all the browser features to ensure maximum, comfortable run javascript sandbox. Read, evaluate, print, and loop, a simple pre-configured coding environment that quickly shows the JavaScript execution result. So, you just open PlayCode without installing anything, write code, and JavaScript playground runs your code instantly and shows the result.Starting Price: $4.99 per month -
23
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 -
24
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 -
25
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 -
26
Telerik DevCraft
Telerik
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 -
27
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.Starting Price: Free -
28
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 -
29
jscoverage
jscoverage
jscoverage tool, both node.js and JavaScript support. Enhance the coverage range. Use mocha to load the jscoverage module, then it works. jscoverage will append coverage info when you select list or spec or tap reporter in mocha. You can use covout to specify the reporter, like HTML, and detail. The detail reporter will print the uncovered code in the console directly. Mocha runs test case with jscoverage module. jscoverage will ignore files while listing in covignore file. jscoverage will output a report in HTML format. jscoverage will inject a group of functions into your module exports. default jscoverage will search covignore in the project root. jscoverage will copy exclude files from the source directory to the destination directory.Starting Price: Free -
30
TheDevSpace
TheDevSpace
Complete roadmap for full-stack developers, covering coding fundamentals from HTML, CSS, and JavaScript to modern frameworks. Featuring an in-browser code playground, 10 real-world projects, and a production-ready Next.js SaaS boilerplate. -
31
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 -
32
JavaScript
JavaScript
JavaScript is a scripting language and programming language for the web that enables developers to build dynamic elements on the web. Over 97% of the websites in the world use client-side JavaScript. JavaScript is one of the most important scripting languages on the web. Strings in JavaScript are contained within a pair of either single quotation marks '' or double quotation marks "". Both quotes represent Strings but be sure to choose one and STICK WITH IT. If you start with a single quote, you need to end with a single quote. There are pros and cons to using both IE single quotes tend to make it easier to write HTML within Javascript as you don’t have to escape the line with a double quote. Let’s say you’re trying to use quotation marks inside a string. You’ll need to use opposite quotation marks inside and outside of JavaScript single or double quotes.Starting Price: Free -
33
CoreIDE
CoreIDE
CoreIDE is a full stack IDE for Java, JavaScript, Node.js and TypeScript developers who work on Spring, Spring Boot, React, Express, Vue, Backbone, AngularJS and other web framework based applications. The IDE is not only limited to web development, you can use it to develop other type of projects like desktop, command line, mobile or stand alone applications. It's free Community version contains all the available features. Java • JavaScript • Node.js • TypeScript • Spring • Spring Boot • React • Express • Vue • Backbone • AngularJSStarting Price: Free -
34
Gantt Chart Hyper Library
DlhSoft
Interactive Gantt chart and scheduling components with built-in project management features, ready for the JavaScript framework: Angular, React, Vue. Designed to empower businesses worldwide, developed with common customer requirements in mind, and used by companies of all sizes, government organizations, and even educational institutions to create stunning Gantt chart applications with more ease. Whether you or your end users need to manage project schedules, track resources, or simply visualize timelines, this library has got you covered. Gantt Chart Hyper Library includes: -Gantt Chart View - hierarchical data grid and attached scheduling chart with drag and drop support and dependency lines; -Schedule Chart View - chart that displays multiple bars on the same line with horizontal and vertical drag and drop support; -LoadChartView - allocation chart displaying normal and over-allocations of one or more resources on a timeline; -Network Diagram; - Pert Chart.Starting Price: €429 -
35
JSDefender
PreEmptive
Cutting-edge JavaScript obfuscation techniques with control-flow flattening, tamper detection and other in-app protection transforms. We would not send our own unprotected code to a remote service controlled by third parties and we would not expect you to either. JSDefender supports major JavaScript frameworks, runtimes, and bundlers including Angular, Node, React, React Native, Webpack and others. Unlike languages like .NET and Java that are compiled to intermediate, stack-based assembly instructions before being distributed in binary form, JavaScript apps are typically distributed in source form. This means that your code is directly visible to anyone with access to the execution environment (like a browser). So, potential attackers can very easily step through the running code using a debugger built into their browser, or use other tools to statically analyze the code for vulnerabilities. -
36
PDF-LIB
PDF-LIB
Create and modify PDF documents in any JavaScript environment. Create PDF documents from scratch, or modify existing PDF documents. Draw text, images, and vector graphics. Embed your own fonts. Even embed and draw pages from other PDFs. Written in TypeScript and compiled to pure JavaScript with no native dependencies. Works in any JavaScript runtime, including browsers, Node, Deno, and even React Native. Add, insert, and remove pages. Split a single PDF into separate ones. Or merge multiple PDFs into a single document. Create new forms or fill and read existing fields. Checkboxes, buttons, radio groups, dropdowns, option lists, and text fields are all supported. If you aren't using a package manager, UMD modules are available on the unpkg and jsDelivr CDNs. Note that only some PDF readers can view attachments. This includes Adobe Reader, Foxit Reader, and Firefox. If you are using the CDN scripts in production, you should include a specific version number in the URL.Starting Price: Free -
37
npm
npm
We're npm, Inc., the company behind Node package manager, the npm Registry, and npm CLI. We offer those to the community for free, but our day job is building and selling useful tools for developers like you. Get started today for free, or step up to npm Pro to enjoy a premium JavaScript development experience, with features like private packages. Bring the best of open source to you, your team, and your company. Relied upon by more than 11 million developers worldwide, npm is committed to making JavaScript development elegant, productive, and safe. The free npm Registry has become the center of JavaScript code sharing, and with more than one million packages, the largest software registry in the world. Our other tools and services take the Registry, and the work you do around it, to the next level. At npm, Inc., we're proud to dedicate teams of full-time employees to operating the npm Registry, enhancing the CLI, improving JavaScript security, and other projects.Starting Price: $7 per month -
38
Prerender
Prerender
Get higher rankings by serving crawlers a static HTML version of your Javascript website, without compromising your customers’ experience. Prerender® is a SaaS platform that makes your JavaScript website SEO-friendly. Before your customer can find your website on search engines like Google, it first has to be crawled and indexed by one of their web crawlers, such as Googlebot. They do this by reading and cataloging a stripped-down, HTML version of your website with the visual and interactive elements taken away. This normally isn’t an issue if your website is built in static HTML, and typically takes just a few days. If your website is made in a JavaScript framework, it’s a different story. While Google can crawl websites built in JavaScript, it’s much harder for them to do. It can easily take weeks before your JavaScript website can be indexed and found in the search results. Google will see all of your content and links, and get your website in front of your customers in no-time.Starting Price: $90 per month -
39
Imperva Client-Side Protection
Imperva
Client-Side Protection provides real-time monitoring of all client-side resources and JavaScript behavior. Gain control over all first and third-party JavaScript code embedded on your website. Actionable insights make it easy to identify risky resources and scripts that should not load on your client side. And if any JavaScript code is compromised, your security team is the first to know. Provides comprehensive inventorying, authorization, dynamic integrity verification, and real-time monitoring, helping streamline regulatory compliance with the new client-side security requirements introduced in PCI DSS 4.0. Protect your website against client-side attacks and streamline regulatory compliance with PCI DSS 4.0. Client-side attacks increase as web applications shift to client-side logic and incorporate more third-party code and resources. These attacks can directly steal sensitive customer data, resulting in breaches and noncompliance with data privacy regulations. -
40
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.Starting Price: Free -
41
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 -
42
Istanbul
Istanbul
JavaScript test coverage made simple. Istanbul instruments your ES5 and ES2015+ JavaScript code with line counters, so that you can track how well your unit-tests exercise your codebase. The nyc command-line-client for Istanbul works well with most JavaScript testing frameworks, tap, mocha, AVA, etc. First-class support of ES6/ES2015+ using babel-plugin-Istanbul. Support for the most popular JavaScript testing frameworks. Support for instrumenting subprocesses, using the nyc command-line interface. Adding coverage to your mocha tests could not be easier. Now, simply place the command nyc in front of your existing test command. nyc's instrument command can be used to instrument source files outside of the context of your unit tests. nyc is able to show you all Node processes that are spawned when running a test script under it. By default, nyc uses Istanbul's text reporter. However, you may specify an alternative reporter.Starting Price: Free -
43
Cloudflare Page Shield
Cloudflare
Backed by our world-class threat intelligence and machine learning capabilities, Page Shield helps defend against client-side attacks that target vulnerable JavaScript dependencies. Detect and mitigate browser supply chain attacks with machine learning-based protection. Get instant notifications when new scripts are detected, marked as malicious, or loaded from unknown domains. Reduce third-party vendor risk and address client-side requirements like GDPR, PCI, and more. Page Shield simplifies third-party script management by tracking loading resources (like scripts) for potentially malicious additions, connections, or changes. Powered by our threat intelligence and machine learning-based detection, it instantly identifies, reports, and blocks threats, before they reach your website. Block browser-based attacks aimed at your users’ personal and financial information. Monitor JavaScript dependencies and block threats with threat intelligence and machine learning. -
44
Bryntum
Bryntum
Bryntum is a leading provider of high-performance scheduling solutions for the web. Our suite of JavaScript components—including Gantt, Scheduler, Task Board, and Calendar—enables developers to build modern project management applications with features like drag-and-drop scheduling, resource management, and interactive timelines. Seamless integration with popular frameworks such as React, Angular, Vue, and Ext JS ensures flexibility and rapid implementation. From streamlining planning workflows to visualizing complex schedules and optimizing resource allocation, Bryntum’s solutions empower organizations across industries to deliver robust, intuitive project planning tools at scale.Starting Price: $680 -
45
ScaleDynamics
ScaleDynamics
Our platform gives new power to web developers and improves the overall process to develop, deploy and manage web applications. This is made possible by the ScaleDynamics' exclusive concept: Module-as-a-Service. Time is Precious Your team discovers a new development experience where they focus only on features. Your team discovers a new development experience where they focus only on features. Did you know that developers spend 75% of their time on coding communications layers? Transform any JavaScript Node.js module into a Module as a Service (MaaS) that will run on the cloud after deployment. Import module in your frontend and use it like any another module without using HTTP, just by doing JavaScript calls! -
46
Electron
Electron
Thousands of organizations spanning all industries use Electron to build cross-platform software. Build cross-platform desktop apps with JavaScript, HTML, and CSS. If you can build a website, you can build a desktop app. Electron is a framework for creating native applications with web technologies like JavaScript, HTML, and CSS. It takes care of the hard parts so you can focus on the core of your application. Electron uses Chromium and Node.js so you can build your app with HTML, CSS, and JavaScript. Electron is an open-source project maintained by the OpenJS Foundation and an active community of contributors. Compatible with Mac, Windows, and Linux, Electron apps build and run on three platforms. To get started with Electron, check out the resources available. Learn how to wrap your web app with Electron, access all the APIs, and generate installers. Also, Electron Fiddle lets you create and play with small Electron experiments.Starting Price: Free -
47
WebStorm
JetBrains
WebStorm is a powerful JavaScript and TypeScript integrated development environment (IDE) designed to boost developer productivity and enjoyment. It comes ready to use out of the box with essential tools for JavaScript, TypeScript, HTML, CSS, and popular frameworks like React, Angular, and Vue. WebStorm offers deep code understanding, fast navigation, safe refactoring, and built-in Git support. It automates complex tasks such as resolving merge conflicts and debugging tests, saving developers time. The IDE integrates advanced AI-powered coding assistance, including unlimited code completion and offline support. WebStorm’s customizable interface and plugin ecosystem make it adaptable to any developer’s workflow.Starting Price: $129 per user per year -
48
Titanium SDK
Titanium SDK
Write in JavaScript, and run natively everywhere. Titanium lets you develop cross-platform native mobile applications and build great mobile experiences using JavaScript. Access your application's hundreds of native UI and non-visual components (such as networks and media APIs). Easily include third-party modules in your apps with Titanium's wide selection of community modules and premium support integrations. The Titanium SDK helps you build native cross-platform mobile applications using JavaScript and the Titanium API, which abstracts the native APIs of the mobile platforms. Titanium empowers you to create immersive, full-featured applications, featuring over 80% code reuse across mobile apps. TiDev licenses Titanium under the OSI-approved Apache Public License (Version 2) and is free for personal and commercial use. Create a basic UI, manage event handling and learn about animations, gestures, and orientation modes.Starting Price: Free -
49
Gridsome
Gridsome
Gridsome makes it easy for developers to build static generated websites & apps that are fast by default. Vue.js, GraphQL & all the power of Node.js & the JavaScript ecosystem. Develop locally and get instant hot-reloading for any code change. Gridsome builds ultra performance into every page by using the PRPL pattern. You get code splitting, asset optimization, progressive images, and link prefetching out of the box. Gridsome sites get almost perfect page speed scores by default. Gridsome generates static PWAs. Only critical HTML, CSS, and JavaScript get loaded first. The next pages are then prefetched so users can click around incredibly fast without page reloads, even when offline. Gridsome sites load as static HTML before they hydrate into fully Vue.js-powered SPAs. This makes it possible for search engines to be able to crawl content and give better SEO ranking, and still have all the power of Vue.js. -
50
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
