Open Source JavaScript Software - Page 37
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JavaScript Software
Browse free open source JavaScript Software and projects below. Use the toggles on the left to filter open source JavaScript Software by OS, license, language, programming language, and project status.
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ESM
Tomorrow's ECMAScript modules today
esm is a JavaScript module loader that enables the use of ECMAScript modules (ESM) in Node.js environments, providing a seamless way to work with modern JavaScript syntax in older Node.js versions. -
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Easings.net
Easing Functions Cheat Sheet
Easings .net is a visualization and reference project dedicated to easing functions, which are widely used in animations and transitions to create natural motion. Instead of linear changes, easing functions help define how values accelerate or decelerate over time, resulting in smoother and more dynamic effects. The project provides a clear, interactive showcase of common easing equations such as quadratic, cubic, quartic, and elastic functions. It is a valuable resource for developers and designers who want to understand and compare different easing behaviors before applying them to web animations, game mechanics, or UI interactions. With its focus on simplicity and clarity, Easings .net has become a popular go-to reference for motion design and development. -
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Ember Infinity
Simple, flexible Infinite Scroll for Ember CLI Apps
Simple, flexible Infinite Scroll for Ember CLI Apps. As of v2.0.0, we support Node 10 and above. We test against ember-source > 3.8. Try out v2.0.0. If it doesn't work or you don't have the right polyfills because you are on an older Ember version, then v1.4.9 will be your best bet. Ember Infinity is based on a component-service approach wherein your application is viewed as an interaction between your components (ephemeral state) and service (long-term state). As a result, we can intelligently store your model state to provide you the ability to cache and invalidate your cache when you need to. If you provide an optional infinityCache timestamp (in ms), the infinity service model hook will return the existing collection (and not make a network request) if the timestamp has not yet expired. Be careful as this will also circumvent your ability to receive fresh data on every route visit. -
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Emittery
Simple and modern async event emitter
A modern, TypeScript-based event emitter for JavaScript applications, providing an intuitive API for managing events in Node.js and browsers. -
Enterprise-grade ITSM, for every businessFreshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
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EpicReact.Dev
Build a ReactJS App workshop
EpicReact.Dev is the codebase used in the “Build an Epic React App” workshop, where participants build a complete React application from scratch. The project demonstrates how to structure a modern React app, including data modeling, authentication, routing, testing, and interaction with a backend. It uses a realistic “bookshelf” domain where users can manage lists of books, track reading status, and record notes, which provides a concrete context for learning. The repository includes setup scripts and system requirements checks for Git, Node, and npm, plus Docker and Codespaces options for people who struggle with local environments. A guided workflow, driven by a node go script and INSTRUCTIONS.md, lets learners move between exercises and extra credit steps while the repository updates the working files for each stage. Extensive tests, using Jest in watch mode, help students verify their solutions and learn how to work with test-driven feedback. -
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EtherCalc
Open source web spreadsheet
EtherCalc is an open source, web-based spreadsheet that allows multiple users to collaborate and work remotely and in real time. Users can edit the same spreadsheet at the same time, with changes instantly reflected on screen. It accepts various mathematical formulae and other functions, and supports several default text formatting directives as well. It can be used for just about anything you’d need a desktop spreadsheet for-- accounting, inventory, scheduling, list management and so much more. EtherCalc is the improved successor to SocialCalc, optimized for simultaneous editing. It’s a great open source alternative to Google sheets, without pesky logins or editing locks. -
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FKit
A functional programming toolkit for JavaScript
FKit (pronounced eff-kit) is a functional programming toolkit for JavaScript. It provides many functions for solving common problems with functions, objects, arrays, and strings. It aims to provide reusable building blocks while maintaining a laser focus on everyday utility. -
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Fabric
Fabric is an open-source framework for augmenting humans using AI
Fabric is a command-line framework that turns a curated library of prompt “patterns” into reusable, automatable workflows for large language models. Instead of repeatedly crafting ad-hoc prompts, you pick a pattern (for research, summarization, brainstorming, code review, and more) and feed it inputs or files. The tool standardizes execution with configuration files and environment variables, enabling reproducible runs across different models and providers. Patterns can be customized with variables, chained into pipelines, and applied to entire directories, which helps scale editorial or analytical tasks. A growing catalog of community patterns serves as a knowledge base for effective prompt engineering in practical contexts. In short, Fabric makes LLM work predictable and scriptable, so teams can share methods rather than one-off prompts. -
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Firebot
A powerful all-in-one bot for Twitch streamers
An all-in-one desktop bot for Twitch featuring support for Chat Commands, Events, Timers, Currencies, Third Party Integrations, and so much more. Visit Firebot's website for more info. Why choose function over form when you can have both! Utilizing modern technologies, Firebot has been built from the ground up with usability in mind. The result is a UI that is equal parts intuitive and beautiful. At the core of Firebot is a simple, yet powerful Effect system that allows you to program the bot to do just about anything with no programming knowledge needed. Firebot is a free, open-source, all-in-one bot for Twitch. It's packed full of everything you need to make your stream fun and interactive. Firebot also allows streamers to take control over their chat. The commands system will help you provide your chat with fun and useful commands. The chat feed built directly into Firebot allows you to not only interact with your chat. -
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Firecrawl MCP Server
Adds powerful web scraping and search to Cursor and Claude
firecrawl-mcp-server is the official MCP integration for Firecrawl that brings high-recall web scraping, crawling, and search into IDEs and agent runtimes. It exposes tools for single-page scrape, multi-URL batch jobs, site discovery, and search enrichment, returning cleaned, structured content suitable for downstream LLM reasoning. The server is designed to run with Firecrawl’s hosted API or self-hosted deployments, making it flexible for enterprise data-governance requirements. Built-in behaviors include JavaScript rendering, automatic retries, and streamable HTTP so long pages and large crawls can flow incrementally into agents. Because it’s an MCP server, clients get typed inputs/outputs and standardized error handling rather than ad-hoc prompt instructions. The repository is active, widely starred, and includes quick starts that make it easy to add web research to an agent stack. -
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Flask Debug-toolbar
A toolbar overlay for debugging Flask applications
This extension adds a toolbar overlay to Flask applications containing useful information for debugging. The toolbar will automatically be injected into HTML responses when debug mode is on. In production, setting app.debug = False will disable the toolbar. This extension also supports the Flask app factory pattern by separately creating the toolbar and later initializing it for an app. -
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Flow Typed
A central repository for Flow library definitions
High-quality library definitions for Flow. flow-typed is a repository of third-party library interface definitions for use with Flow. When you start a project with Flow, you likely want to use some third-party libraries that were not written with Flow. By default, Flow will just ignore these libraries leaving them untyped. As a result, Flow can't give errors if you accidentally misuse the library (nor will it be able to auto-complete the library). To address this, Flow supports library definitions which allow you to describe the interface of a module or library separate from the implementation of that module/library. The flow-typed repo is a collection of high-quality library definitions, tests to ensure that definitions remain high quality, and tools to make it as easy as possible to import them into your project. All you have to do when you add one or more new dependencies to your project is run flow-typed install. -
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Flux
Application architecture for building user interfaces
Flux is the application architecture that Facebook uses for building client-side web applications. It complements React's composable view components by utilizing a unidirectional data flow. It's more of a pattern rather than a formal framework, and you can start using Flux immediately without a lot of new code. Flux applications have three major parts: the dispatcher, the stores, and the views (React components). These should not be confused with Model-View-Controller. Controllers do exist in a Flux application, but they are controller-views — views often found at the top of the hierarchy that retrieve data from the stores and pass this data down to their children. Additionally, action creators — dispatcher helper methods — are used to support a semantic API that describes all changes that are possible in the application. It can be useful to think of them as a fourth part of the Flux update cycle. -
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Fuse.js
Lightweight fuzzy-search, in JavaScript
Fuse.js is a powerful, lightweight fuzzy-search library, with zero dependencies. Generally speaking, fuzzy searching (more formally known as approximate string matching) is the technique of finding strings that are approximately equal to a given pattern (rather than exactly). It might not make sense for every situation, but can be ideal depending on your search requirements. For example, qhen you want client-side fuzzy searching of small to moderately large data sets. Also, when you can't justify setting up a dedicated backend simply to handle search. ElasticSearch or Algolia, although both great services, may be overkill for your particular use cases. You can access all options above via Fuse.config. This is useful if you want to override default options for all Fuse instances. Fuse.js supports logical query operators. These operators are used for filtering the data and getting precise results based on the given conditions. -
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G Desktop Suite
Google Suite as a desktop app. Made possible with Electron
Have you ever wished you had a no-frills, word-processing desktop app dedicated to just Google Drive? Annoyed at having to click the Go to My Drive button every time you visit drive.google? Want a Microsoft Word-esque experience for your Google Drive? Or simply looking to separate Google Drive from the other bazillion tabs that you opened for your research paper? Look no further! G Desktop Suite is a desktop wrapper for Google Drive built with ElectronJS. Give it a try, and if you like what you see, share it with your friends! As of v.conscious-club/0.2.0, the app will automatically adjust to your OS's dark mode settings. To build the app locally, clone the repository, install all dependencies, and run the available npm scripts. To build production-ready applications for macos (dmg), windows (exe), and linux (sh), run yarn build. -
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G6
A Graph Visualization Framework in JavaScript
G6 is graph visualization engine with simplicity and convenience. Based on the ability to customize, it provides a set of elegant graph visualization solutions and helps developers to build up applications for graph visualization, graph analysis, and graph editor. G6 is a complete graph visualization engine, which focuses on relational data. According to practical business scenarios, we found the top solutions. Well-designed simple, flexible, and extendable interfaces will satisfy your infinite originality. A social network is an important scenario in graph visualization. The relationships become complicated with the development of social networks. Graph visualization and analysis do well in these complex cases. -
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GitHub Actions for DigitalOcean
GitHub Actions for DigitalOcean - doctl
GitHub Actions for DigitalOcean - doctl. Powerful and production-ready, our cloud platform has the solutions that devs like you need to succeed, whether you're building world-changing AI apps, running a side project, or building a business. GPU solutions for everyone—novice to expert. Run training and inference, process large data sets and complex neural networks, and deploy high-performance computing clusters. -
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Hain
An 'alt+space' launcher for Windows, built with Electron
An alt+space launcher for Windows, built with Electron. I always dreamed of an alternative to Alfred on Windows, that is made with JavaScript. so, I made it. It's a launcher with strict syntax (like terminal programs), it's not targeting to interpret natural language. I believe strict syntax can provide a more powerful and fast response than interpreting natural language. Searching Executable files very fast with Fuzzy Matching. Plugins in Pure JavaScript. I always dreamed of an alternative to Alfred on Windows, that is made with JavaScript. -
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Handsontable
JavaScript data grid with a spreadsheet look & feel
Rock-solid data grid for web applications. A JavaScript component that combines data grid features with spreadsheet-like UX. Legendary support included. Works with React, Angular, Vue, and JavaScript. When you work with Handsontable, it's like you're working with Excel or Google Sheets. There's no steep learning curve – you can start working effectively from day one. Handsontable is easy to implement, flexible, and super customizable. You can extend it with custom plugins and edit the source code to adjust it to your product. Plus you get access to a comprehensive API, useful tutorials, and both community and commercial support. You can finally work with large volumes of data without worrying about performance issues. Large companies and startups across industries use Handsontable to build applications critical to their business. -
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IPFS Web UI
A frontend for an IPFS node
A web interface to IPFS, shipped with Kubo, and ipfs-desktop. Check on your node stats, explore the IPLD powered merkle forest, see peers around the world and manage your files, without needing to touch the CLI. When working on the code, run an ipfs daemon, the local dev server, the unit tests, and the storybook component viewer and see the results of your changes as you save files. If you need to run IPFS in a Docker container, you can still have Web UI available by exposing both the Gateway and Web UI ports. The end-to-end tests (E2E) test the full app in a headless Chromium browser. They spawn real IPFS node for HTTP API and a static HTTP server to serve the app. The purpose of those tests is not being comprehensible, but act as a quick regression and integration suite. -
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JS JOSE
JavaScript library to encrypt/decrypt data in JSON Web Encryption
JavaScript library to encrypt/decrypt data in JSON Web Encryption. -
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JSCamp InfoJobs
Content and exercises fromJSCamp InfoJobs
JSCamp InfoJobs is the companion repository for JSCamp InfoJobs, an intensive full-stack JavaScript bootcamp in Spanish designed to take students from fundamentals to advanced topics. It is organized into numbered modules like 00-html-css, 01-javascript, 02-react, 03-router-and-zustand, 04-node, 05-typescript, 06-inteligencia-artificial, 07-sql, 08-ci-cd, and 09-docker, mirroring the curriculum of the bootcamp.The README explains that students will build a complete project step by step throughout the bootcamp, applying each module’s lessons to a single real-world application, which is ideal for portfolio building. The repo also links to jscamp.dev, where the videos and course materials are hosted, and explains that access is free, with an optional paid certificate that includes extra support like CV review, exercise feedback, and exclusive workshops. Detailed installation requirements are listed (modern browser, VS Code, Live Preview extension, Node.js 20+, Git, Docker, etc. -
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JSS
An authoring tool for CSS which uses JavaScript as a host language
A lib for generating Style Sheets with JavaScript. JSS is an authoring tool for CSS which allows you to use JavaScript to describe styles in a declarative, conflict-free and reusable way. It can compile in the browser, server-side or at build time in Node. JSS is framework agnostic. It consists of multiple packages, the core, plugins, framework integrations and others. If you’re interested in playing around with JSS, you can use an online code playground. Try a Hello World example on CodeSandbox. JSS generates actual CSS, not Inline Styles. It supports every existing CSS feature. CSS rules are created once and reused across the elements using its class name in contrary to Inline Styles. Also, when DOM elements get updated, previously created CSS rules are applied. JSS generates unique class names by default. It allows avoiding the typical CSS problem, where everything is global by default. It completely removes the need for naming conventions. -
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JavaGuide
"Java Learning + Interview Guide" covers the core Java knowledge
JavaGuide is an open source knowledge base and learning resource for Java developers, created and maintained by Snailclimb. The project organizes and explains a wide range of Java-related concepts, from language fundamentals to advanced topics such as concurrency, JVM internals, distributed systems, and high availability design. It is especially popular among developers preparing for technical interviews, as it compiles common knowledge points, detailed explanations, and source code analyses that interviewers frequently explore. The repository also includes sections on computer science basics such as operating systems, networks, and data structures, along with practical guides for databases, Redis, MySQL, and MongoDB. Beyond core Java, JavaGuide covers tools like Maven, Docker, Git, and frameworks like Spring, Spring Boot, and MyBatis. Its structured approach makes it a comprehensive handbook for both beginners and experienced backend engineers. -
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JavaScript Algo and Data Structures
Algorithms and data structures implemented in JavaScript
javascript-algorithms is an open source repository by Oleksii Trekhleb that provides implementations of algorithms and data structures in JavaScript. Each algorithm includes explanations, complexity analysis, and references for further reading, making it both a coding resource and a study guide. The repository covers topics such as sorting, searching, graph algorithms, cryptography, and data structures like linked lists, stacks, and queues. It is designed to help developers understand algorithm fundamentals and practice problem-solving with JavaScript. Multilingual README files make the resource accessible to a global audience. With strong community engagement, it is one of the most popular algorithm repositories on GitHub.