Open Source JavaScript Software - Page 78
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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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Ship Agents FasterGemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
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Egg
Born to build better enterprise frameworks and apps with Node.js
Born to build. Better enterprise frameworks and apps with Node.js & Koa. Born to build better enterprise frameworks and apps. Based on open-source ecology, customized for ant-ecology, can be integrated to backend middleware in one minute, supporting multiple deployment environments. Progressive development, smooth learning curve, one-stop development kit, supporting your whole process of development. With high-quality, complete tests, and built-in security policy, withstood the largest amount of traffic like Double 11 Promotion. Convention over configuration, highly flexible customization, industry-leading plugin systems, and upper-layer business-specific framework systems. -
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Electronic WeChat
A better WeChat on macOS and Linux. Built with Electron
A better WeChat on macOS and Linux. Built with Electron by Zhongyi Tong. If you want to build the app by yourself rather than download the release directly, please consider to use the source code from the production branch, the master branch is under development and we cannot guarantee it to be stable. The supported and available features are: a modern UI and all features from Web WeChat, block message recall, stickers showing support, share subscribed passages on Weibo, Qzone, Facebook, Twitter, Evernote, and email. Also, you can mention users in a group chat, drag and drop to send photos. it behaves like a native app, based on dozens of optimization, and removes URL link redirects and takes you directly to blocked websites (e.g. taobao.com). Install with your familiar package manager. Electronic WeChat is released by this open source project. While Web WeChat is a major component in the app, it should be noted that this is a community release and not an official WeChat release. -
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Element
A Vue.js 2.0 UI Toolkit for Web
Element is a component library based on Vue.js 2.0 that can be used by developers, designers and product managers to build products that are logically sound, well-structured and easy to use. Element uses BEM-styled CSS so you can easily change styles when you want to. There are four ways you can change style variables. You can use the online theme roller to customize design tokens and preview new themes in real-time. You can also use the theme preview website (for changing the theme color only), update SCSS variables, or use the CLI theme tool. You can also import your own custom themes. -
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Elymus
Decentralized stack for paranoids-decentralizers
Elymus is stack for dWeb: Browser, SDK, and bundle of nodes for p2p communication. It uses Repens protocol for dWeb sites (however you can access usual web2 sites through it, better use normal browser when doing it), developed to provide absolutely decentralized way to host and access frontends. Repens protocol utilizes Handshake Protocol as decentralized KV storage and content addressing system, IPFS as p2p caching system (user visits site, and caches its content, while seeding it through p2p network to next visitors, just like torrent but for websites), and Arweave/Sia/Hypercore Protocol as content anchoring networks (that will seed frontend when nobody has it in IPFS cache). Elymus is driven by decentralization-first convenience-last ideology. We have already seen many dWeb projects whose only relation to dWeb is that they utilize blockchains in some way. So we are ready to pay with convenience and heaviness for decentralization. -
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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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Emoji Mart
One component to pick them all
Data required for the picker to work has been completely decoupled from the library. That gives developers the flexibility to better control their app bundle size and let them choose how and when this data is loaded. Callback when the Add custom emoji button is clicked. The button will only be displayed if this callback is provided. It is displayed when search returns no results. You can use custom emojis by providing an array of categories and their emojis. Emojis also support multiple skin tones and can be GIFs or SVGs. You can use custom category icons by providing an object with the category name as key and the icon as value. Currently supported formats are svg string and src. First, you need to make sure data has been initialized. You need to call this only once per page load. Note that if you call init like this, you don’t necessarily need to include data in your Picker props. It doesn’t hurt either, it will noop. -
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Ethlint
(Formerly Solium) Code quality & Security Linter for Solidity
Ethlint (Formerly Solium) analyzes your Solidity code for style & security issues and fixes them. Standardize Smart Contract practices across your organization. Integrate with your build system. Deploy with confidence! Solium does not strictly follow Solidity Style Guide. The practices it enforces by default are best practices for the community at large. If you’re using vim with syntastic, and prefer to use a locally installed version of Solium (rather than a global version), you can install syntastic local solium to automatically load the local version in packages that have installed their own. Solium does not strictly adhere to Solidity Style Guide. It aims to promote coding practices agreed upon by the community at large. You can specify rules or plugins to apply as command line options. If you specify one, it overrides its corresponding configuration in the soliumrc file. -
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EventCatalog
Open source tool for documenting and exploring event-driven systems
EventCatalog is an open source documentation tool designed for event-driven architectures. It helps teams organize, document, and understand complex systems by mapping events, services, domains, and flows in one place. Instead of scattered knowledge, it creates a central, searchable catalog that improves visibility and collaboration. Documentation is generated and maintained automatically, making it easier to keep systems up to date as they evolve. With built-in discoverability features, developers and stakeholders can quickly explore how services interact and identify dependencies. EventCatalog supports extensibility through APIs and integrations, allowing teams to adapt it to their workflows. By bringing structure and governance to distributed systems, EventCatalog reduces confusion and helps teams make informed decisions faster. It is widely used by organizations to simplify event-driven systems and improve communication across teams. -
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FSKneeboard
FSKneeboard adds a helpful ingame panel to your flight simulator
FSKneeboard (formerly known as "VFR Map For VR") adds a helpful in-game panel to your flight simulator which brings several different maps, waypoints and tracks, a charts viewer, and a notepad right into your Flight Simulator cockpit! This is is especially helpful for those of us who like to fly in VR. Powerful, highly detailed maps for your next VFR trip. Optimized for VR! Your approach charts, checklists, and notes at your fingertips. Use your mouse to quickly take notes of ATIS and ATC instructions. Automatically create snapshots/savegames from your flights every few minutes so you're able to recover Flight Simulator instabilities and crashes (fully configurable, see Advanced Usage Section for details). Search for any address or POI worldwide right from FSKneeboard and add it as waypoint or even teleport there. Windows Installer for simple installation and configuration. -
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FSRS4Anki
A modern Anki custom scheduling based on Free Spaced Repetition
A modern spaced-repetition scheduler for Anki based on the Free Spaced Repetition Scheduler algorithm. -
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Fabric.js
Javascript Canvas Library and SVG-to-Canvas Parser
Fabric.js is a simple yet powerful Javascript HTML5 canvas library that allows you to easily work with HTML5 canvas element in various ways. It is also an SVG-to-canvas (and vice versa) parser. Fabric provides an interactive object model on top of canvas element, so you can create and populate objects on canvas; manipulate the size, position and rotation of these objects; modify properties such as color, transparency and more. You could also group these objects together with just a simple mouse selection. Fabric offers support for touch devices, as well as Node.js support. It currently supports the following browsers: Firefox 2+, Safari 3+, Opera 9.64+, Chrome (all versions), IE10, IE11, and Edge. -
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Facebox
Facebook-style lightbox, built in jQuery
Facebox is a jQuery-based lightbox plugin designed to display content in a modal overlay on top of a webpage. It allows developers to present images, HTML content, or remote data in a visually appealing popup without navigating away from the current page. The plugin is inspired by early lightbox implementations and focuses on simplicity and ease of integration into existing web projects. It provides a clean user experience by dimming the background and highlighting the modal content, drawing attention to the displayed information. Facebox supports loading content via AJAX, making it useful for dynamic applications where content is fetched on demand. It also includes basic styling and animation effects to enhance usability and presentation. -
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Falcon
Free, open-source SQL client for Windows and Mac
Falcon is a free, open-source SQL editor with inline data visualization. With Falcon you can connect to your database in the Connection tab, run SQL queries in the Query tab, then export your results as a CSV or open them in the Chart Studio to unlock the full power of Plotly graphs. Optionally, you can use Falcon as a middleman between plot.ly and your database - so that when your database updates, your charts and dashboards update as well. Currently, Falcon supports connections to RedShift, MySQL, PostgreSQL, IBM DB2, Impala, MS SQL, and SQLite. In version 2.0+, the app will now automatically generate an SSL. This may take several minutes! Falcon is open source and works without an internet connection or a Plotly Chart Studio account. The software works well and we hope you find it useful. -
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FastRTC
The python library for real-time communication
FastRTC is a Python library designed to simplify real-time communication (RTC), especially for audio and video streaming applications. It abstracts away much of the complexity that typically comes with implementing WebRTC by providing a simple interface — e.g. a Stream class — that can be mounted within a web backend (for example a FastAPI application). This makes it particularly well suited for building real-time voice (or video) interfaces for applications such as AI assistants, live chat, or collaborative audio/video tools. FastRTC also integrates nicely with UI frameworks (e.g. via a web demo using Gradio), so developers can rapidly prototype and deploy real-time streaming applications without deep knowledge of low-level WebRTC internals. Because voice-enabled AI agents often involve many moving parts (speech-to-text, text processing, text-to-speech, streaming, session/chat management), FastRTC helps by handling the streaming aspect, leaving the rest to be plugged in modularly. -
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Fastify
Fast and low overhead web framework, for Node.js
Fastify is a high-performance web framework for Node.js that focuses on minimal overhead and predictable extensibility. It pairs a declarative routing API with JSON Schema–driven validation and serialization, so requests are checked at the edge and responses are produced quickly. The framework’s plugin system uses encapsulation to isolate routes, decorators, and hooks, which keeps large codebases modular and avoids accidental cross-pollution. Built-in hooks (such as onRequest, preHandler, and onSend) and lightweight decorators make it easy to insert cross-cutting concerns like auth, caching, and metrics. Fastify ships with thoughtful defaults like structured logging via Pino and AJV for schema validation, and it has first-class TypeScript types. The result is a server stack that scales to high throughput while remaining easy to reason about in production. -
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FileSaver.js
An HTML5 saveAs() FileSaver implementation
Have you ever wanted to add a Save as… button to a webapp? Whether you’re making an advanced WebGL-powered CAD webapp and want to save 3D object files or you just want to save plain text files in a simple Markdown text editor, saving files in the browser has always been a tricky business. Usually when you want to save a file generated with JavaScript, you have to send the data to your server and then return the data right back with a Content-disposition: attachment header. This is less than ideal for webapps that need to work offline. The W3C File API includes a FileSaver interface, which makes saving generated data as easy as saveAs(data, filename), though unfortunately it will eventually be removed from the spec. With FileSaver.js, which implements FileSaver in all modern browsers, it’s possible to generate any type of file you want right in the browser, document editors can have an instant save button that doesn’t rely on an online connection. -
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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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Firefox GNOME theme
A GNOME theme for Firefox
A GNOME theme for Firefox. This theme follows lastest GNOME Adwaita style. Be aware that this theme might do things that are not supported by upstream Firefox. If you face an issue while using this theme, report it here first or test if it is reproducible in vanilla Firefox. If you are a software distribution maintainer, please do not ship these changes by default to your users unless you made it extremely clear that they are using a modified version of Firefox UI. This is a bunch of CSS code to make Firefox look closer to GNOME's native apps. The master branch of this repo supports the current Firefox stable release 105. Theme versions compatible with older Firefox releases are preserved as git tags. We also have the beta branch for fixes only applicable to the current Firefox beta version. -
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FlyingFox
An opinionated set of configurations for firefox
An opinionated set of configurations for Firefox. Some of the code, namely urlbar and popups CSS are slightly edited versions of the ones from Material Fox. Takes up the least space, and expands when hovered. Permanently expanded. Can be toggled with a shortcut. ( ctrl+shift+a > TST > right top cogwheel > extension shortcuts) Supported extension icons are changed, and a mask(generated for custom color with webapp) is applied to unsupported ones to blend them better with rest of the theme. Switch window-controls to right. Along with vertical tabs, traditional horizontal tabs are also included. -
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Fomantic-UI
Fomantic-UI is the community fork of Semantic-UI
Fomantic is a development framework that helps create beautiful, responsive layouts using human-friendly HTML. Fomantic UI treats words and classes as exchangeable concepts. Classes use syntax from natural languages like noun/modifier relationships, word order, and plurality to link concepts intuitively. Get the same benefits as BEM or SMACSS, but without the tedium. Fomantic uses simple phrases called behaviors that trigger functionality. Any arbitrary decision in a component is included as a setting that developers can modify. Performance logging lets you track down bottlenecks without digging through stack traces. Fomantic comes equipped with an intuitive inheritance system and high-level theming variables that let you have complete design freedom. Develop your UI once, then deploy with the same code everywhere. The only dogma from this framework: everything arbitrary is mutable. -
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FormCreate
The easy-to-use Vue low-code visual AI form designer
FormCreate is a low-code visual form builder built on Vue that enables developers to create complex, dynamic forms through a drag-and-drop interface rather than manual coding. It is part of the broader form-create ecosystem and leverages JSON-based schema generation to dynamically render forms, handle validation, and manage data collection workflows. The tool is designed to significantly reduce development time by allowing users to visually assemble forms while automatically generating the underlying configuration and logic. It supports multiple UI frameworks such as Element Plus and Vant, making it adaptable for both desktop and mobile applications. The platform has been widely applied in enterprise systems such as ERP, OA, and e-commerce platforms, demonstrating its scalability and reliability in production environments. Additionally, it includes support for custom components and extensibility, allowing developers to tailor form behavior to complex business requirements. -
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FrenchKiss.js
The blazing fast lightweight internationalization (i18n) module
FrenchKiss.js is a blazing fast lightweight i18n library written in JavaScript, working both in the browser and NodeJS environments. It provides a simple and really fast solution for handling internationalization. FrenchKiss is by now, the fastest i18n JS package out there, working 5 to 1000 times faster than any others by JIT compiling the translations, try it by running the benchmarks. -
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Functional-Light JavaScript
Pragmatic, balanced FP in JavaScript
Functional-Light JavaScript is an online book that teaches functional programming principles through a pragmatic JavaScript lens. Instead of insisting on strict purity, it adopts a balanced approach that keeps code practical while showing how immutability, composition, and declarative thinking improve quality. Chapters build up from values and closures to higher-order functions, list operations, transducing, and async patterns, all grounded in idiomatic JS. The writing favors intuition and trade-offs, explaining when a technique helps and when it becomes counterproductive. Numerous examples and exercises turn abstract ideas into patterns you can apply in everyday modules and services. It’s a developer-friendly path to writing clearer, more predictable code without abandoning JavaScript’s strengths. -
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Gantry Framework
Next Generation Template / Theme Framework
Develop CMS themes quickly and efficiently while providing flexibility and ease of use for end-users. Gantry was born when the RocketTheme development team wanted to consolidate our extensive set of custom Grav, Joomla and WordPress theme functionality into a simple, easy-to-use framework. Yes, that’s right! Gantry 5 has a powerful and easy-to-use Layout Manager that ensures controlling the layout is a highly visual experience. When we started the Gantry 5 project, we wanted to think past the concept of Gantry as a framework. We wanted to create something so versatile and powerful, that it could stand on its own as a platform, virtually independent of a CMS in concept and implementation. Utilizing a dual MIT & GPL license, Gantry is free to use pretty much anywhere! Designed from the ground-up with performance and efficiency in mind. Configure and structure your menu hierarchy with our new Menu editor. -
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Gemma Translator
Code to run an on-device, fully offline voice translator
Gemma Translator is an on-device voice translation system built around Google's Gemma 4 model and LiteRT-LM. It records speech, transcribes it locally, translates the resulting text, and speaks the translation back to another user. The entire inference workflow can operate offline after the required models are installed. Its React interface is optimized for compact handheld and Raspberry Pi displays, including two-person conversational layouts. A Python backend coordinates speech recognition, text-to-speech, and communication with the local language model. Scripts automate setup, model downloading, development startup, and production deployment as a Raspberry Pi kiosk. The repository also includes systemd configuration and printable enclosure files for building a dedicated translation appliance.
