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.
Free online accounting for small businesses and freelancers
Stars
10,101Last commit
20 hours agoLicense
Unknown
Self-hostable accounting software covering invoicing, expense tracking, cash flow, and client portals. Free to use, available in 50+ languages.
Open Source Alternative to:
Open source marketing automation for everyone
Stars
10,436Last commit
2 hours agoLicense
Unknown
Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.
Open Source Alternative to:
Design editor that opens Figma files, runs AI, and stays local
Stars
8,158Last commit
2 hours agoLicense
MIT
A Figma-compatible design editor with built-in AI chat, headless CLI, real-time P2P collaboration, and a Vue SDK for building custom editors. No account needed.
Open Source Alternative to:
Modern payment infrastructure for digital products and SaaS
Stars
10,232Last commit
2 hours agoLicense
Apache-2.0
Comprehensive payment solution with built-in tax handling, automated benefits, and seamless integrations for digital product and SaaS businesses.
Open Source Alternative to:
Save articles for later reading with complete privacy
Stars
12,947Last commit
22 hours agoLicense
MIT
Self-hosted web article archiving tool that extracts content for comfortable reading. Import from Pocket, Instapaper. Open source with API access.
Open Source Alternative to:
Full-stack observability without the enterprise price tag
Stars
9,871Last commit
1 hour agoLicense
MIT
Open source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.
Open Source Alternative to:
Open-source document sharing with powerful analytics
Stars
9,040Last commit
6 days agoLicense
AGPL-3.0
Secure, customizable platform for sharing documents and tracking engagement. Perfect for sales teams, marketers, and businesses.
Open Source Alternative to:
Simplify your links with this free, modern URL shortener
Stars
11,069Last commit
15 hours agoLicense
MIT
Kutt offers a free and open-source solution for shortening URLs, complete with custom domains and detailed analytics.
Open Source Alternative to:
Goal-driven project management for all brains
Stars
11,512Last commit
20 days agoLicense
AGPL-3.0
Open-source software designed to streamline tasks, boost productivity, and enhance collaboration for teams of all types, including those with ADHD and neurodiversity.
Open Source Alternative to:
Instant file sharing across devices without setup
Stars
11,302Last commit
4 months agoLicense
GPL-3.0
Share files instantly between devices using peer-to-peer technology. No registration, installation, or configuration required. Works cross-platform.
Open Source Alternative to:
Effortless time tracking for open source projects
Stars
8,898Last commit
6 hours agoLicense
AGPL-3.0
Seamlessly track time across multiple projects, generate insightful reports, and optimize your open source contributions.
Open Source Alternative to:
Send invoices, accept payments, manage your business—all free
Stars
10,048Last commit
21 hours agoLicense
Elastic-2.0
Free invoicing software for freelancers and small businesses. Create professional invoices, track expenses, accept online payments, and manage projects without hidden fees.
Open Source Alternative to:
Self-hosted bookmark manager built for speed and simplicity
Stars
11,144Last commit
21 hours agoLicense
MIT
Minimal, fast bookmark manager with automatic metadata fetching, archiving, multi-user support, and browser extensions. Easy Docker setup with SQLite.
Open Source Alternative to:
Terminal-native AI coding agent built on ZSH
Stars
7,607Last commit
3 days agoLicense
Apache-2.0
AI coding harness that runs inside your terminal, mixes LLMs per task, and uses multi-agent architecture to handle large codebases without bloating context.
Open Source Alternative to:
Create powerful forms with ease and flexibility
Stars
8,963Last commit
4 days agoLicense
AGPL-3.0
A versatile form builder for crafting custom surveys, quizzes, and data collection tools with advanced features and integrations.
Open Source Alternative to:
Full-text & vector search at the edge.
Stars
10,543Last commit
1 month agoLicense
Unknown
Blend full-text and semantic search for unlimited queries across 300 global locations. Get precise answers and matches at a flat rate, no matter your search volume.
Open Source Alternative to:
Visual web development with code-level control
Stars
8,895Last commit
2 hours agoLicense
AGPL-3.0
Powerful no-code platform for building responsive websites. Combines visual editing with full HTML/CSS customization.
Open Source Alternative to:
Ultra-fast AI gateway with enterprise-grade reliability
Stars
7,783Last commit
1 hour agoLicense
Apache-2.0
Open-source AI gateway delivering 50x faster performance than alternatives. Access 1000+ models from 8+ providers with built-in governance, fallback, and observability.
Open Source Alternative to:
Build and deploy scalable storefronts with ease
Stars
10,940Last commit
3 months agoLicense
MIT
A comprehensive Frontend as a Service solution that helps developers create, deploy and manage enterprise ecommerce storefronts with ready integrations and cloud infrastructure.
Open Source Alternative to:
Secure desktop investment tracker for private wealth management
Stars
8,788Last commit
1 hour agoLicense
AGPL-3.0
Wealthfolio is a simple, secure desktop app for tracking investments and managing your wealth without compromising data privacy.
Open Source Alternative to:
Modern kanban that's fast, fun, and refreshingly simple
Stars
8,169Last commit
2 hours agoLicense
Unknown
Track issues, ideas, and projects with a modern kanban board that's fast and straightforward. Free for 1000 cards, then $20/month for unlimited use.
Open Source Alternative to:
Status page and uptime monitoring for growing teams
Stars
9,059Last commit
7 hours agoLicense
AGPL-3.0
Open-source status page and uptime monitor that tracks endpoints from 28 global regions, communicates incidents, and helps satisfy SOC 2 audit requirements.
Open Source Alternative to:
Track, analyze, and optimize your investments effortlessly
Stars
9,235Last commit
3 hours agoLicense
AGPL-3.0
Open-source wealth management software for tracking stocks, ETFs, and cryptocurrencies across multiple portfolios
Open Source Alternative to:
Cloud browser sessions for AI agents and web automation
Stars
7,589Last commit
20 hours agoLicense
Apache-2.0
Open-source browser infrastructure that lets AI agents and automation scripts control cloud browser fleets via a simple API, with built-in CAPTCHA solving and proxy management.
Open Source Alternative to:
Flexible, scalable Node.js CMS and app framework
Stars
9,967Last commit
2 days agoLicense
MIT
A powerful, customizable content management system and application framework built on Node.js, GraphQL, and React
Open Source Alternative to:
Cloud-native data warehouse for lightning-fast analytics
Stars
9,434Last commit
2 hours agoLicense
Unknown
Databend is an open-source, elastic cloud data warehouse built for high-performance analytics and seamless integration with popular data tools.
Open Source Alternative to:
Private workspace for notes, tasks, and databases
Stars
8,747Last commit
2 days agoLicense
Unknown
A local-first, encrypted workspace for notes, tasks, databases, and chats. Your data stays on your device, syncs peer-to-peer, and never passes through a central server.
Open Source Alternative to:
Magical data pipeline tool for seamless transformations
Stars
8,819Last commit
21 days agoLicense
Apache-2.0
Open-source data pipeline platform for effortless data integration, transformation, and orchestration using Python, SQL, and R.
Open Source Alternative to:
Privacy-first CAPTCHA alternative with proof-of-work
Stars
7,676Last commit
5 days agoLicense
Apache-2.0
Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry.
Open Source Alternative to:
Distributed task queue for background jobs and workflows
Stars
7,850Last commit
2 hours agoLicense
MIT
Durable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.
Open Source Alternative to:
Professional digital painting made accessible to everyone
Stars
10,303Last commit
13 hours agoLicense
GPL-3.0
Free and open source painting program built by artists for artists. Features professional brushes, layers, animation tools, and drawing assistants for all skill levels.
Open Source Alternative to:
Serverless backend platform for modern app development
Stars
9,285Last commit
2 hours agoLicense
MIT
Fully managed backend infrastructure with built-in authentication, database, storage, and serverless functions for rapid application development.
Open Source Alternative to:
Real-time observability for modern web applications
Stars
9,372Last commit
14 days agoLicense
Apache-2.0
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Open Source Alternative to:
Flexible e-commerce for modern businesses
Stars
8,396Last commit
8 hours agoLicense
MIT
A headless, API-first e-commerce framework built on Node.js with TypeScript, offering customization and scalability for online stores.
Open Source Alternative to:
Visual development platform for modern web experiences
Stars
8,822Last commit
15 hours agoLicense
MIT
Drag-and-drop interface for creating and optimizing digital experiences, with headless CMS and powerful integrations.
Open Source Alternative to:
Voice-to-text that works offline, privately, on any app
Stars
6,419Last commit
2 hours agoLicense
MIT
Dictation app powered by OpenAI Whisper and NVIDIA Parakeet. Runs locally on macOS, Windows, and Linux with zero data retention and 100+ language support.
Open Source Alternative to:
Fast, flexible VPN replacement with zero-trust security
Stars
9,048Last commit
1 hour agoLicense
Apache-2.0
Replace your VPN with zero-trust access built on WireGuard. Fast, scalable network security with simple policies and identity provider integration.
Open Source Alternative to:
Open-source A/B testing and feature flagging platform
Stars
8,275Last commit
1 hour agoLicense
MIT
Powerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.
Open Source Alternative to:
Secure, customizable e-signatures for modern businesses
Stars
6,958Last commit
13 days agoLicense
AGPL-3.0
A powerful, open-source e-signature solution offering customization, integration, and enhanced security for businesses of all sizes.
Open Source Alternative to:
Full-stack observability without code changes
Stars
7,903Last commit
9 hours agoLicense
Apache-2.0
Coroot simplifies system monitoring by providing metrics, logs, traces, and profiling with zero instrumentation, leveraging eBPF technology.
Open Source Alternative to:
The tensor database for AI data
Stars
9,230Last commit
4 months agoLicense
Apache-2.0
Deep Lake is an open-source database for storing, querying and managing complex AI data like images, audio, and embeddings.
Open Source Alternative to:
Modular auth, payments, emails, and analytics for your product
Stars
6,847Last commit
2 hours agoLicense
Unknown
Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.
Open Source Alternative to:
Stellar Hosted – Managed Open Source software hosting in the EU: secure, compliant, fast.
CodeRabbit
Docmost
Sevalla