Discover the best open-source software you can self-host. We track thousands of projects across GitHub and rank them by stars, activity, and community adoption. Whether you are looking for a replacement for a proprietary SaaS product or exploring new tools, you will find curated options organized by category, license, and popularity.
Try searching by description — lightweight password manager for families or alternative to notion for self-hosted notes.
Best FOSS alternatives to popular SaaS products
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AI Coding
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Best software by GitHub Stars
OpenClaw
377.3k
OpenClaw is a personal AI assistant that runs on the user's own devices and connects to messaging channels, voice, and a live canvas interface.
Claws & ClankersSelf Hosting SolutionsAI Agents+2
2 Containers
n8n
191.4k
n8n is a workflow automation platform for technical teams that combines visual no-code building with code-based extensibility.
Automation ToolsPermissive LicenseLow Code Development+4
Single ContainerSource Available
hermes-agent
184.8k
Hermes Agent is a self-improving AI agent with a built-in learning loop, terminal UI, and messaging gateway for chatting and automating work across platforms.
Generative AIAI AgentsAI Coding Assistant+2
2 Containers
AutoGPT
184.8k
AutoGPT is a platform for creating, deploying, and managing continuous AI agents that automate complex workflows.
Artificial IntelligenceAutomation ToolsPermissive License+3
13 ContainersOpen Core
Ollama
173.4k
Ollama is a local runtime for running open models and interacting with them through a CLI, REST API, and integrations.
Generative AIArtificial IntelligenceLocal LLMs+3
opencode
170.9k
An open source AI coding agent.
Artificial IntelligenceAI Coding AssistantPermissive License+4
Dify.ai
144.2k
An open-source platform for building, testing, and operating LLM-powered applications with workflows, RAG, agents, and observability.
Low Code DevelopmentPermissive LicenseGenerative AI+4
36 ContainersOpen Core
Open-WebUI
140.4k
Open WebUI is a self-hosted AI platform for chatting with LLMs, managing RAG, and building custom model workflows, designed to run entirely offline.
Generative AIArtificial IntelligenceAI Interfaces+5
2 ContainersOpen Core
Claude Code
130.7k
Claude Code is an agentic coding tool that runs in the terminal and helps with coding tasks, code explanation, and git workflows using natural language commands.
Artificial IntelligenceAI Coding AssistantAI Harness+3
Cloud Required
Excalidraw
124.8k
An open source virtual hand-drawn style whiteboard for creating diagrams and wireframes.
Diagramming ToolsKnowledge ManagementPermissive License
Single Container
ComfyUI
116.0k
ComfyUI is a modular node-based AI engine for creating images, video, 3D, audio, and other content with fine-grained control over models and parameters.
Artificial IntelligenceAI Media GenerationCopyleft License+3
Freemium
Immich
102.8k
High performance self-hosted photo and video management solution.
Photo GalleriesCopyleft LicenseMedia Management+1
4 Containers