Open Source Projects using GitHub
A curated collection of the 344 best open source software using GitHub. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Self-hosted SEO platform for keyword, backlink, and rank tracking
Stars
Stars growing quickly over the last 30 days24,805Last commit
2 days agoLicense
MIT
Manage keyword research, backlink analysis, competitor monitoring, and rank tracking without expensive SaaS subscriptions. Self-hostable, MIT-licensed, uses DataForSEO.
Open Source Alternative to:
Structured control layer for customer-facing AI agents
Stars
18,308Last commit
1 day agoLicense
Apache-2.0
A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.
Open Source Alternative to:
An agentic CRM that keeps records current automatically
Stars
Stars growing over the last 30 days11,648Last commit
1 day agoLicense
MIT
Open source CRM with AI agents that read your inbox, enrich contacts and companies, schedule follow-ups, and build new agents from plain-language descriptions.
Open Source Alternative to:
Local voice dictation with AI enhancement for macOS
Stars
Stars growing over the last 30 days6,911Last commit
8 hours agoLicense
GPL-3.0
Privacy-first dictation app for Apple Silicon Macs that transcribes speech locally, cleans up output with AI, and auto-switches settings per app.
Open Source Alternative to:
Task management with GitHub sync and AI agents for devs
Stars
Stars growing quickly over the last 30 days4,898Last commit
6 hours agoLicense
AGPL-3.0
Task manager built for engineering teams, combining status tracking, priority management, GitHub integration, and AI agents that can close tasks automatically.
Open Source Alternative to:
Team chat with email, tasks, and docs in one workspace
Stars
Stars growing quickly over the last 30 days4,898Last commit
6 hours agoLicense
AGPL-3.0
Team chat app with inline threads, mention-based sharing, a unified inbox for chat and email, and an AI agent that works across your full workspace.
Open Source Alternative to:
Keyboard-first email client with AI, chat, and tasks
Stars
Stars growing quickly over the last 30 days4,898Last commit
6 hours agoLicense
AGPL-3.0
An AI-powered email client that combines inbox management, chat, tasks, and AI agents in one shared workspace, built for keyboard-driven workflows.
Open Source Alternative to:
Markdown docs wired into tasks, email, and agents
Stars
Stars growing quickly over the last 30 days4,898Last commit
6 hours agoLicense
AGPL-3.0
Collaborative markdown documents with real-time CRDT editing, AI agent cursors, mention linking, and built-in properties tied to your tasks, channels, and email.
Open Source Alternative to:
A self-building CRM powered by your email
Stars
Stars growing quickly over the last 30 days4,898Last commit
6 hours agoLicense
AGPL-3.0
Automatically creates and enriches contacts, companies, and deal threads from your team's email. No data entry, no imports, no admin overhead.
Open Source Alternative to:
No-code database and app builder you can self-host
Stars
Stars growing over the last 30 days6,209Last commit
6 hours agoLicense
MIT
Open-source platform for building databases, internal apps, and automated workflows without writing code. Available on cloud or self-hosted.
Open Source Alternative to:
Private AI chat with zero-access encryption
Stars
5,653Last commit
1 day agoLicense
GPL-3.0
AI chat assistant from Proton that stores conversations with zero-access encryption, never logs chats, and never uses your data to train models.
Open Source Alternative to:
AWS-compatible cloud APIs on infrastructure you control
Stars
Stars growing quickly over the last 30 days393Last commit
1 day agoLicense
AGPL-3.0
Spinifex recreates EC2, S3, EBS, VPC, IAM, and more on your own hardware, so AWS-built software runs unchanged without touching a hyperscaler.
Open Source Alternative to:
An AI assistant that acts, not just answers
Stars
392,950Last commit
6 hours agoLicense
MIT
A personal AI assistant that connects to your existing chat apps and handles real tasks like email, calendar, and flight check-ins on your behalf.
Open Source Alternative to:
Desktop AI agent with persistent memory across platforms
Stars
Stars growing over the last 30 days256,759Last commit
6 hours agoLicense
MIT
Cross-platform desktop agent from Nous Research that connects to Telegram, Discord, Slack, WhatsApp, and more, with persistent memory, scheduling, and isolated sandboxing.
Open Source Alternative to:
AI coding agent for terminal, IDE, and desktop
Stars
Stars growing over the last 30 days221,034Last commit
6 hours agoLicense
MIT
Open source AI coding agent that works in your terminal, IDE, or desktop app, supporting 75+ LLM providers with no code storage.
Open Source Alternative to:
Build and run AI agents that handle recurring work for you
Stars
187,725Last commit
6 hours agoLicense
Other
Platform for building, deploying, and running AI agents that automate repeatable digital work across research, outreach, content, and support without writing code.
Open Source Alternative to:
Run open-source LLMs locally on your own machine
Stars
184,643Last commit
8 hours agoLicense
MIT
Runs open-source language models locally with a simple setup, plus optional cloud access for larger models when local hardware isn't enough.
Open Source Alternative to:
AI coding agent that works inside your terminal
Stars
130,796Last commit
1 day agoLicense
Apache-2.0
Terminal-based AI coding agent that inspects files, edits code, runs commands, and integrates into CI pipelines using OpenAI's Codex models.
Open Source Alternative to:
Run LLMs locally with minimal setup, maximum hardware support
Stars
132,241Last commit
6 hours agoLicense
MIT
C/C++ inference engine for large language models, supporting quantization, multi-GPU, Apple Silicon, and an OpenAI-compatible server across a wide range of hardware.
Open Source Alternative to:
Org chart, budgets, and governance for AI agent teams
Stars
Stars growing quickly over the last 30 days106,892Last commit
6 hours agoLicense
MIT
Manages teams of AI agents across business functions with org charts, goal alignment, cost tracking, ticket tracing, and board-level governance controls.
Open Source Alternative to:
Minimal terminal coding agent you can fully customize
Stars
Stars growing over the last 30 days117,590Last commit
8 hours agoLicense
MIT
Terminal-based coding agent with a minimal core, 15+ LLM providers, tree-structured session history, and a TypeScript extension system for building your own workflows.
Open Source Alternative to:
Run multiple AI coding agents in parallel, side by side
Stars
Stars growing quickly over the last 30 days104,821Last commit
6 hours agoLicense
MIT
Agent Development Environment that runs Claude Code, Codex, Gemini, and other CLI agents in parallel across isolated git worktrees, with terminals, browser, diff review, and git tools built in.
Open Source Alternative to:
Self-hosted remote desktop you fully control
Stars
126,817Last commit
17 hours agoLicense
AGPL-3.0
Cross-platform remote desktop software that runs on your own servers, giving you full data control as a direct alternative to TeamViewer and AnyDesk.
Open Source Alternative to:
High-throughput, memory-efficient serving engine for LLMs
Stars
95,327Last commit
9 hours agoLicense
Apache-2.0
Inference and serving engine for large language models, built for speed and hardware efficiency with an OpenAI-compatible API and support for a wide range of open models.
Open Source Alternative to:
Local control smart home automation with privacy first
Stars
91,703Last commit
7 hours agoLicense
Apache-2.0
Open source home automation platform supporting 1000+ devices with local control, powerful automations, custom dashboards, and voice assistant. No cloud required.
Open Source Alternative to:
LLM-ready web crawler built for AI data pipelines
Stars
86,180Last commit
2 days agoLicense
Apache-2.0
Open-source web crawler and scraper that produces clean, structured output optimized for LLMs, RAG pipelines, and AI agents. Supports async crawling, CSS/XPath/LLM extraction, and stealth browser control.
Open Source Alternative to:
High-performance code editor built for speed and AI
Stars
92,144Last commit
6 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:
Mac cleaner, app manager, and system monitor in one
Stars
Stars growing over the last 30 days72,714Last commit
11 hours agoLicense
GPL-3.0
Native macOS app that cleans caches, uninstalls apps with leftovers, maps disk usage, and shows live system metrics. One-time purchase, lifetime updates.
Open Source Alternative to:
Hyperextensible, Lua-powered Vim-based text editor
Stars
103,144Last commit
21 hours agoLicense
Unknown
A modernized Vim fork with built-in LSP, Lua scripting, Tree-sitter parsing, and an async plugin architecture that works the same across every platform.
Open Source Alternative to:
Open-source AI coding agent for your editor and terminal
Stars
70,822Last commit
19 hours agoLicense
Apache-2.0
AI coding agent that runs inside VS Code and the terminal, supporting multi-file edits, bash execution, and any LLM provider via bring-your-own-key.
Open Source Alternative to:
Text-based diagramming that renders in code and docs
Stars
90,839Last commit
7 hours agoLicense
MIT
Create flowcharts, sequence diagrams, Gantt charts, and more using a simple Markdown-like syntax that renders anywhere.
Open Source Alternative to:
Project management for teams mixing humans and AI agents
Stars
Stars growing over the last 30 days53,714Last commit
22 hours agoLicense
Unknown
Open-source platform that manages coding agents as team members, with task queues, skill libraries, runtime monitoring, and a unified activity feed.
Open Source Alternative to:
Coding agent that runs on local and open-weight models
Stars
68,659Last commit
14 days agoLicense
Apache-2.0
Coding agent that lets LLMs write and execute code, manage files, and control your computer using local or low-cost models.
Open Source Alternative to:
Self-hosted AI agent for chat, automation, and workflows
Stars
49,329Last commit
7 hours agoLicense
MIT
Lightweight, self-hosted AI agent that runs in a web UI, terminal, or chat app, handling long-running workflows with controlled token budgets.
Open Source Alternative to:
Real-time monitoring for systems and applications
Stars
81,117Last commit
1 day agoLicense
GPL-3.0
Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.
Open Source Alternative to:
Headless CMS with REST and GraphQL APIs out of the box
Stars
73,371Last commit
1 day agoLicense
MIT
TypeScript headless CMS that generates REST and GraphQL APIs from your content model, with a no-code builder, plugin system, and full self-hosting support.
Open Source Alternative to:
A modern terminal built around AI coding agents
Stars
65,674Last commit
1 day agoLicense
AGPL-3.0
Terminal built for running AI coding agents like Claude Code, Codex, and Gemini CLI, with shared context, interactive code review, and multi-session management.
Open Source Alternative to:
General-purpose AI agent for code, workflows, and more
Stars
55,640Last commit
8 hours agoLicense
Apache-2.0
Local AI agent with a desktop app, CLI, and API that connects to 15+ LLM providers and 70+ extensions for code, research, automation, and data tasks.
Open Source Alternative to:
Deploy apps, databases, and services to your own server
Stars
63,726Last commit
6 hours agoLicense
Apache-2.0
Self-hostable deployment platform that lets you deploy apps, databases, and 280+ one-click services to any server via SSH, with Git integration and automatic SSL.
Open Source Alternative to:
Run open-source AI models privately on your own device
Stars
77,355Last commit
1 year agoLicense
MIT
GPT4All runs open-source language models locally on Windows, macOS, and Linux with no cloud dependency, keeping your data on your machine.
Open Source Alternative to:
Fast GPU-accelerated terminal with native UI design
Stars
62,566Last commit
1 day agoLicense
MIT
Experience blazing-fast terminal performance with GPU acceleration and platform-native UI. Cross-platform compatibility meets modern design.
Open Source Alternative to:
Self-hosted Bitwarden server that runs lean on your hardware
Stars
69,597Last commit
3 days agoLicense
AGPL-3.0
Unofficial Bitwarden-compatible server written in Rust, built for self-hosting on low-resource hardware without sacrificing client compatibility.
Open Source Alternative to:
Windshift – The self-hosted platform that replaces Jira.
Openlane
Bright Data
CodeRabbit