Open Source JavaScript Projects
Discover 138 open source JavaScript repositories from GitHub, each with an analysis of what it does, key features, use cases and alternatives. JavaScript projects here are most often combined with Web Development, Developer Tools and TypeScript. Last updated October 3, 2026.
138 repositories · updated October 3, 2026
my-virtual-world: Host a 3D World for AI Agents
My Virtual World is a self-hosted 3D environment where AI agents can move, interact with objects, and show activity from local agent systems. It suits people who want a visual workspace for OpenClaw, Hermes, or other agent harnesses.
deliberation: Get Multi-Model Reviews and Consensus
Deliberation is an MCP server and coding-agent plugin that routes plans and code questions to external AI models for second opinions or arbiter-mediated consensus. It suits developers who want independent reviews before making consequential changes.
Open-Higgsfield-AI: Review and Run an AI Image Studio
A JavaScript-based AI image studio presented as a self-hosted alternative to Higgsfield AI. The repository currently describes the app as an internal review tool, with image generation paused until provider credits are available.
officeonline: Connect Nextcloud to Office Online Server
Nextcloud’s Office Online integration lets users work with documents through a self-hosted Office Online Server. It is intended for Nextcloud deployments that can configure an on-premise server as a trusted WOPI host.
core: Self-Host File Storage and Sharing
ownCloud Core is the PHP server behind ownCloud Classic, providing self-hosted file storage, synchronization, and sharing. It suits organizations and teams that need control over their files and can operate a PHP-based server.
Shepherd: Guide Users Through Interactive Tours in Your App
Shepherd is an open-source JavaScript library designed to create interactive user onboarding tours and guided experiences within web applications. It offers extensive customization options and supports various popular frameworks, including React, Angular, Vue, and Ember. This powerful tool helps enhance user adoption by guiding them through your app's features effortlessly.
codex-plugin-cc: Use Codex from Claude Code
A Claude Code plugin that connects your existing local Codex CLI for code reviews and delegated tasks. It suits developers who want Codex in their current workflow, with background job controls and session handoff.
PptxGenJS: Generate PowerPoint Presentations with JavaScript
PptxGenJS creates editable PowerPoint files from JavaScript or TypeScript, for use in Node.js and browser-based applications. It suits developers who need to generate slides, charts, tables, and other presentation content in code.
h264-mp4-encoder: Encode H.264 Video to MP4 in JavaScript
A WebAssembly-backed library for encoding RGBA or YUV frames into H.264 video in an MP4 container. It targets JavaScript applications in browsers or Node.js, including workflows that turn canvas frames into video.
crater: Create Invoices and Track Business Expenses
Crater is a web and mobile invoicing app for individuals and businesses. It helps manage invoices, estimates, expenses, payments, and customer accounts, with a Laravel and Vue web app and React Native mobile apps.
textrix: Create and Publish Rich-Text Articles
Textrix is a ProseMirror-based publishing editor for building Medium-style writing experiences. It combines editing and publishing, with static HTML output and support for framework-based or vanilla JavaScript apps.
Scramble: An Open-Source AI Writing Assistant for Your Browser
Scramble is an open-source Chrome extension that leverages AI to enhance your writing directly in the browser. It offers a customizable alternative to Grammarly, allowing users to configure LLM providers, models, and endpoints. With support for various large language models and custom prompts, Scramble provides flexible text enhancement options.