Browse Trending Open Source Tools This Month
Open source tools gaining GitHub stars fastest over the last 30 days. Ranked by growth rate rather than raw star count, so genuine breakouts surface above established projects.
Build AI copilots for your product in hours, not months
Stars
37,980Last commit
7 hours agoLicense
MIT
Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.
Open Source Alternative to:
Group chat for friends and communities, without the baggage
Stars
3,389Last commit
15 hours agoLicense
Unknown
Self-hostable group chat with servers, channels, voice, and moderation tools. No ads, no data mining, built under EU privacy law.
Open Source Alternative to:
Simple, fast, and secure push notifications for all
Stars
34,780Last commit
11 hours agoLicense
Apache-2.0
A lightweight, open-source solution for sending real-time notifications to your devices, with end-to-end encryption and no sign-up required.
Open Source Alternative to:
Collaborative bookmark manager for teams and individuals
Stars
20,084Last commit
13 hours agoLicense
AGPL-3.0
Open-source platform to collect, organize, and preserve webpages with powerful collaboration features
Open Source Alternative to:
AI-powered analytics workspace built for investment teams
Stars
74,181Last commit
17 hours agoLicense
AGPL-3.0
Connects proprietary, licensed, and public financial data with AI agents in a self-hostable workspace for asset managers, hedge funds, and banks.
Open Source Alternative to:
24/7 screen and audio recorder with AI memory search
Stars
21,929Last commit
7 hours agoLicense
Other
Records your screen and microphone locally, transcribes meetings automatically, and exposes selected work context to compatible AI assistants through its MCP server and local API.
Open Source Alternative to:
Self-hosted email platform with visual editor & analytics
Stars
2,245Last commit
13 days agoLicense
AGPL-3.0
Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.
Open Source Alternative to:
Transform any song into karaoke with AI-powered vocals
Stars
1,497Last commit
8 hours agoLicense
GPL-3.0
AI-powered karaoke software that separates vocals from any song, transcribes lyrics with word-level sync, scores your pitch in real-time, and includes dynamic backgrounds.
Open Source Alternative to:
Secure secret management for modern development teams
Stars
29,729Last commit
7 hours agoLicense
MIT
End-to-end encrypted secret management platform for seamless integration and enhanced security in development workflows.
Open Source Alternative to:
Free, open-source software for video recording and live streaming
Stars
77,414Last commit
4 days agoLicense
GPL-2.0
OBS Studio offers high-quality video recording and live streaming capabilities, supporting multiple platforms and providers.
Open Source Alternative to:
Comprehensive open-source HR management solution
Stars
1,455Last commit
1 day agoLicense
LGPL-2.1
Horilla is a free, open-source HRMS that streamlines HR processes, from recruitment to offboarding, with customizable modules.
Open Source Alternative to:
High-performance code editor built for speed and AI
Stars
91,660Last commit
8 hours agoLicense
GPL-3.0
A Rust-built code editor from the creators of Atom and Tree-sitter, combining native performance with multiplayer collaboration and deep AI integration.
Open Source Alternative to:
Remove Mac apps and all their leftover files
Stars
14,846Last commit
4 months agoLicense
Unknown
Mac app uninstaller that finds and removes associated files, orphaned leftovers, and development artifacts across macOS 13 and later.
Open Source Alternative to:
Instant file sharing across devices without setup
Stars
11,578Last commit
6 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:
Build unlimited AI apps locally with zero vendor lock-in
Stars
21,880Last commit
14 hours agoLicense
Apache-2.0
Create full-stack AI applications using any model or tool. Run entirely on your machine with complete privacy, flexibility, and control over your code.
Open Source Alternative to:
Effortless event-driven workflows for modern applications
Stars
5,938Last commit
18 hours agoLicense
SSPL-1.0
Simplify backend processes with event-driven functions, seamless integrations, and powerful debugging tools for developers.
Open Source Alternative to:
Privacy-first knowledge base with any AI model you choose
Stars
16,408Last commit
19 hours agoLicense
Apache-2.0
Self-hostable NotebookLM alternative that lets teams build searchable knowledge bases from diverse sources, with support for any LLM and no data limits.
Open Source Alternative to:
Professional audio editing made simple and free
Stars
18,721Last commit
1 day agoLicense
Unknown
Free, open-source audio editor and recorder for all platforms. Record, edit, mix and enhance audio with professional tools. Perfect for music, podcasts, and more.
Open Source Alternative to:
Multi-model AI desktop client with local-first privacy
Stars
52,589Last commit
7 hours agoLicense
AGPL-3.0
Desktop AI client for Windows, macOS, and Linux that connects 300+ models from 50+ providers, with local storage, a built-in knowledge base, and autonomous agent mode.
Open Source Alternative to:
S3-based serverless Kafka reinvented for cost efficiency
Stars
10,909Last commit
8 hours agoLicense
Apache-2.0
AutoMQ is a serverless Kafka alternative built on S3 that offers 10x cost savings, easy scalability, and full Kafka compatibility.
Open Source Alternative to:
Professional digital painting made accessible to everyone
Stars
10,539Last commit
8 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:
Transcribe meetings and voice notes with local AI, no bots required
Stars
103Last commit
9 days agoLicense
MIT
Free, open-source AI note-taker that transcribes meetings and voice notes locally using Whisper and Parakeet. Works on Mac, Windows, and mobile without invasive bots.
Open Source Alternative to:
Your all-in-one marketplace for digital creators and products
Stars
9,852Last commit
8 hours agoLicense
MIT
A digital marketplace platform where creators can sell digital products, from courses to software, with built-in payment processing and content delivery.
Open Source Alternative to:
Open-source A/B testing and feature flagging platform
Stars
8,496Last commit
9 hours agoLicense
MIT
Powerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.
Open Source Alternative to:
Privacy-first offline maps for hiking, cycling & navigation
Stars
15,659Last commit
7 hours agoLicense
Apache-2.0
Free, open-source offline maps app with detailed trails, turn-by-turn navigation, and zero tracking. Perfect for hikers, cyclists, and travelers seeking privacy.
Open Source Alternative to:
Open source agency management tool for streamlined success
Stars
3,238Last commit
7 hours agoLicense
AGPL-3.0
Worklenz is a comprehensive project management platform that helps agencies organize tasks, track resources, and boost productivity.
Open Source Alternative to:
Build beautiful documentation sites with Next.js
Stars
13,348Last commit
11 hours agoLicense
MIT
A flexible Next.js framework for creating stunning documentation sites with MDX support, built-in search, and customizable components.
Open Source Alternative to:
Open-source email API with enterprise deliverability
Stars
918Last commit
1 day agoLicense
AGPL-3.0
Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
Open Source Alternative to:
Terminal coding agent with full model and data control
Stars
1,713Last commit
10 hours agoLicense
MIT
Open-source AI coding agent for the terminal that works with 25+ model providers, keeps sessions on your disk, and ships as a single Go binary with no telemetry.
Open Source Alternative to:
Chat with your documents using any LLM, fully private
Stars
67,003Last commit
16 hours agoLicense
MIT
A desktop and self-hostable AI app for chatting with documents, running local LLMs, and using AI agents without writing code or creating an account.
Open Source Alternative to:
Self-hosted newsletter and mailing list manager
Stars
23,769Last commit
2 days agoLicense
AGPL-3.0
Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres.
Open Source Alternative to:
Secure authentication and access control made simple
Stars
37,323Last commit
7 hours agoLicense
Apache-2.0
Comprehensive open source identity management solution offering single sign-on, social login, and fine-grained authorization for applications and services.
Open Source Alternative to:
Collaborative whiteboard with a hand-drawn aesthetic
Stars
133,760Last commit
8 hours agoLicense
MIT
Virtual whiteboard for sketching diagrams, flowcharts, and wireframes with a distinctive hand-drawn look. Real-time collaboration built in.
Open Source Alternative to:
Desktop multi-agent workforce for automating real tasks
Stars
15,506Last commit
9 hours agoLicense
Apache-2.0
Self-hostable desktop app that runs a coordinated team of AI agents to browse the web, manage files, execute terminal commands, and complete complex workflows.
Open Source Alternative to:
Fast, scalable vector database for AI applications
Stars
35,054Last commit
7 hours agoLicense
Apache-2.0
Qdrant is an open-source vector database that provides high-performance similarity search for AI and machine learning applications.
Open Source Alternative to:
Open-source testing agent for UI, API, security, accessibility & visual QA
Stars
1,184Last commit
2 months agoLicense
AGPL-3.0
Hercules is the first open-source testing agent, enabling zero-code, zero-maintenance UI, API, security, accessibility, and visual validations.
Open Source Alternative to:
Build custom apps without code, deploy with ease
Stars
24,560Last commit
7 hours agoLicense
Unknown
Open-source no-code platform for creating tailored business applications quickly, with full customization and easy deployment options.
Open Source Alternative to:
Run long-running AI tasks without timeouts or servers
Stars
16,528Last commit
7 hours agoLicense
Apache-2.0
Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.
Open Source Alternative to:
Simple yet powerful CI/CD engine with great extensibility
Stars
7,995Last commit
11 hours agoLicense
Apache-2.0
Open-source CI/CD platform using Docker containers for pipeline execution. Create multiple workflows, extend with plugins, and enjoy free lifetime access.
Open Source Alternative to:
Visual workflow automation with code flexibility and AI agents
Stars
207,180Last commit
7 hours agoLicense
Unknown
Build automated workflows connecting 500+ apps, write custom code, and deploy AI agents with full visibility into every decision. Self-hostable or cloud.
Open Source Alternative to:
Professional RAW photo editing and workflow management
Stars
13,271Last commit
9 hours agoLicense
GPL-3.0
Open source photography workflow application for RAW development. Non-destructive editing, professional color management, and GPU acceleration for photographers.
Open Source Alternative to:
Continuous compliance automation for SOC 2, ISO 27001 & more
Stars
324Last commit
16 hours agoLicense
Apache-2.0
Automates evidence collection, control tracking, and audit reporting across SOC 2, ISO 27001, NIST 800-53, GDPR, and 12+ other frameworks in one platform.
Open Source Alternative to:
Bright Data – Web data for AI agents and apps. Built-in unblocking, proxies, and ready-made APIs.
Capture
InfluxDB
CodeRabbit