Open Source Projects using JavaScript
A curated collection of the 673 best open source software using JavaScript. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Self-hosted team messaging with voice, video, and AI
Stars
46,070Last commit
13 hours agoLicense
MIT
Open source communication platform combining messaging, voice, video, and AI for organizations that need full data control, air-gapped deployments, and zero-trust security.
Open Source Alternative to:
AI pair programmer that works inside your terminal
Stars
48,691Last commit
3 months agoLicense
Apache-2.0
Terminal-based AI coding tool that lets you edit existing codebases or start new projects using LLMs like Claude, GPT, and DeepSeek.
Open Source Alternative to:
Lightning-fast analytics for massive datasets
Stars
49,620Last commit
12 hours agoLicense
Apache-2.0
High-performance columnar OLAP database system for real-time analytics on big data, with SQL support and linear scalability.
Open Source Alternative to:
Privacy-focused browser with powerful customization
Stars
44,227Last commit
18 hours agoLicense
MPL-2.0
A Firefox-based browser offering enhanced privacy, split views, and extensive customization options for a personalized browsing experience.
Open Source Alternative to:
AI-powered research notebook with full privacy control
Stars
38,117Last commit
21 hours agoLicense
MIT
Combines AI summarization, podcast generation, and multi-format content ingestion for researchers and students who want to keep their data private.
Open Source Alternative to:
Decentralized social networking in your control
Stars
50,265Last commit
12 hours agoLicense
AGPL-3.0
A free, open-source social media platform that puts users in charge of their data and connections
Open Source Alternative to:
Run AI models locally or connect to cloud, privately
Stars
44,308Last commit
12 hours agoLicense
Apache-2.0
Jan runs open-source AI models on your own hardware or connects to cloud providers like OpenAI, Anthropic, and Google, keeping your conversations off third-party servers.
Open Source Alternative to:
Free database manager for SQL databases and beyond
Stars
51,638Last commit
12 hours agoLicense
Apache-2.0
Cross-platform database management tool for exploring, editing, and querying SQL databases including MySQL, PostgreSQL, SQLite, MariaDB, and more.
Open Source Alternative to:
Effortlessly organize your digital documents
Stars
44,803Last commit
16 hours agoLicense
GPL-3.0
A powerful open-source solution for managing, organizing, and searching your digital documents with ease and efficiency.
Open Source Alternative to:
Unlock data insights with powerful, user-friendly analytics
Stars
49,067Last commit
12 hours agoLicense
Unknown
Open-source business intelligence platform for data exploration, visualization, and sharing. Empowers teams to make data-driven decisions effortlessly.
Open Source Alternative to:
Headless CMS for developers, built with Node.js
Stars
44,551Last commit
15 hours agoLicense
MIT
A powerful, flexible, and developer-friendly content management system that prioritizes customization and scalability.
Open Source Alternative to:
High-performance vector database for GenAI applications
Stars
45,944Last commit
16 hours agoLicense
Apache-2.0
Open-source vector database optimized for similarity search, scaling to billions of vectors with minimal performance loss
Open Source Alternative to:
Cultivate vibrant online communities with ease
Stars
47,782Last commit
12 hours agoLicense
GPL-2.0
A powerful, customizable platform for building and managing online forums, fostering engaging discussions and collaborative spaces.
Open Source Alternative to:
Team chat, project management, and AI agents in one place
Stars
32,019Last commit
12 hours agoLicense
Apache-2.0
Workspace that combines team chat, project planning, and git management with AI agents that collaborate alongside your team on shared context.
Open Source Alternative to:
Privacy-first knowledge management with block-level linking
Stars
46,140Last commit
12 hours agoLicense
AGPL-3.0
Personal knowledge management system with WYSIWYG block editing, bidirectional links, spaced repetition flashcards, a relational database, and end-to-end encrypted sync.
Open Source Alternative to:
Build internal tools rapidly without coding
Stars
40,830Last commit
12 hours agoLicense
AGPL-3.0
Open-source low-code platform for creating custom internal tools, dashboards, and admin panels with a drag-and-drop interface
Open Source Alternative to:
Privacy-first knowledge base that connects your notes
Stars
44,746Last commit
20 hours agoLicense
AGPL-3.0
Local-first, open-source knowledge management tool with bidirectional linking, outlines, flashcards, PDF annotations, and whiteboards for building a connected second brain.
Open Source Alternative to:
Design database diagrams and generate SQL scripts instantly
Stars
39,342Last commit
5 days agoLicense
AGPL-3.0
Free online database diagram editor with SQL generation. Create ER diagrams, visualize relationships, export scripts, and reverse engineer schemas - no signup required.
Open Source Alternative to:
Effortless deployment and management for any VPS
Stars
37,056Last commit
22 hours agoLicense
Unknown
Streamline your deployment process with Dokploy. Manage applications and databases on any VPS using Docker and Traefik for improved performance and security.
Open Source Alternative to:
Comprehensive business management, tailored for you
Stars
38,825Last commit
12 hours agoLicense
GPL-3.0
Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.
Open Source Alternative to:
Build AI copilots for your product in hours, not months
Stars
37,171Last commit
20 hours agoLicense
MIT
Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.
Open Source Alternative to:
Empower your website with privacy-focused analytics
Stars
38,559Last commit
22 hours agoLicense
MIT
A lightweight, open-source alternative to Google Analytics that respects user privacy and provides valuable insights.
Open Source Alternative to:
Open-source coding agent for your IDE and terminal
Stars
35,736Last commit
1 day agoLicense
Apache-2.0
Runs source-controlled AI checks on every pull request, enforcing your engineering standards as native GitHub status checks with suggested fixes.
Open Source Alternative to:
Visual builder for AI agents and LLM workflows
Stars
55,402Last commit
21 days agoLicense
Apache-2.0
Open source platform for building AI agents, chatbots, and multi-agent systems using a drag-and-drop interface, with support for 100+ LLMs and RAG.
Open Source Alternative to:
Empower your team to build custom internal tools rapidly
Stars
40,804Last commit
13 hours agoLicense
Apache-2.0
Low-code platform for creating powerful internal tools and dashboards with drag-and-drop ease, robust integrations, and customizable workflows.
Open Source Alternative to:
Unlock Product Insights with Open-Source Analytics
Stars
39,572Last commit
12 hours agoLicense
MIT
All-in-one product analytics platform. Track user behavior, run experiments, and make data-driven decisions to grow your product.
Open Source Alternative to:
Manage Linux servers with ease through a modern web interface
Stars
36,784Last commit
12 hours agoLicense
GPL-3.0
Comprehensive web-based tool for Linux server administration with integrated website, database, container, and LLM management capabilities.
Open Source Alternative to:
Open source LLM engineering platform for AI-powered applications
Stars
34,131Last commit
12 hours agoLicense
MIT
Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.
Open Source Alternative to:
Omnichannel customer support with a built-in AI assistant
Stars
36,430Last commit
12 hours agoLicense
MIT
Manage customer conversations across live chat, email, WhatsApp, Instagram, and more from one inbox, with an AI assistant that suggests replies and automates common questions.
Open Source Alternative to:
Secure collaboration platform for mission-critical work
Stars
38,976Last commit
12 hours agoLicense
Unknown
Mattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.
Open Source Alternative to:
AI coding agent and CLI for complex terminal workflows
Stars
26,404Last commit
2 days agoLicense
Apache-2.0
Terminal-based coding agent powered by Grok 4.5 that plans, builds, tests, and deploys across any codebase with parallel subagents and plugin support.
Open Source Alternative to:
Scale-out SQL database for real-time analytics
Stars
40,483Last commit
12 hours agoLicense
Apache-2.0
Distributed SQL database combining OLTP and OLAP capabilities, offering horizontal scalability, high availability, and real-time analytics.
Open Source Alternative to:
Unified AI-powered enterprise search across company data
Stars
31,905Last commit
15 hours agoLicense
MIT
An open-source platform that connects to 40+ apps to provide intelligent search and AI assistance across all company information
Open Source Alternative to:
Cut and trim video without re-encoding or quality loss
Stars
43,421Last commit
21 hours agoLicense
GPL-2.0
Desktop app for lossless video and audio editing. Cut, trim, merge, and remux files in seconds without re-encoding, using FFmpeg under the hood.
Open Source Alternative to:
Real-time error tracking and performance monitoring
Stars
44,714Last commit
12 hours agoLicense
Unknown
Detect, diagnose, and resolve software issues quickly with powerful error tracking, performance monitoring, and release management.
Open Source Alternative to:
Press a key, speak, release. Text appears instantly.
Stars
30,929Last commit
3 days agoLicense
MIT
Cross-platform desktop app that transcribes your voice into any text field using a keyboard shortcut, with all processing done locally on your machine.
Open Source Alternative to:
Local AI meeting transcription with zero data leaving your device
Stars
30,268Last commit
17 hours agoLicense
MIT
Records, transcribes, and summarizes meetings entirely on your device using local AI. No bots, no cloud uploads, GDPR and HIPAA compliant by design.
Open Source Alternative to:
Open-source e-commerce for modern developers
Stars
36,112Last commit
12 hours agoLicense
MIT
Flexible, customizable e-commerce platform with headless architecture, built-in features, and extensive plugin ecosystem for scalable online stores.
Open Source Alternative to:
Your personal distributed filesystem
Stars
38,892Last commit
1 month agoLicense
AGPL-3.0
A cross-platform file manager that unifies your devices into a seamless, organized digital workspace.
Open Source Alternative to:
AI second brain for research, automation, and personal agents
Stars
37,026Last commit
1 month agoLicense
AGPL-3.0
Self-hostable AI assistant that connects to your docs and the web, lets you build agents, schedule automations, and run research with verifiable citations.
Open Source Alternative to:
Build powerful AI knowledge bases with ease
Stars
29,551Last commit
12 hours agoLicense
Unknown
FastGPT is a free, open-source platform for creating AI-powered knowledge bases with data processing, model invocation, and visual workflows.
Open Source Alternative to:
Privacy-first metasearch across 270+ sources
Stars
36,452Last commit
14 hours agoLicense
AGPL-3.0
Self-hostable metasearch engine that aggregates results from 270+ sources without tracking or profiling users, with optional JavaScript and Tor support.
Open Source Alternative to:
Stellar Hosted – Managed Open Source software hosting in the EU: secure, compliant, fast.
Stellar Hosted
Sevalla
InfluxDB