A curated directory of powerful open source AI tools you can install, self-host, and extend. No paywalls, no vendor lock-in — just production-grade software backed by vibrant communities.
11 tools. One-click install guides. 100% free.
Open source platforms for building automated workflows, pipelines, and integrations — no vendor lock-in.
The open source alternative to Zapier and Make. Build powerful automation workflows with a visual drag-and-drop editor, connect 200+ integrations, and self-host on your own infrastructure. Zero per-operation costs.
docker run -d --name activepieces -p 8080:80
ghcr.io/activepieces/activepieces:latest
npx create-activepieces@latest my-project
cd my-project && npm run start
# Open in browser after install:
open http://localhost:8080
Fair-code workflow automation platform with 400+ integrations, a visual editor, and advanced branching logic. Self-host or use n8n cloud.
docker run -it --rm --name n8n -p 5678:5678
n8nio/n8n
Open-source LLM app development platform with visual orchestration, RAG pipeline, agent capabilities, and model management across providers.
git clone https://github.com/langgenius/dify.git
cd dify/docker && docker compose up -d
Run AI models on your own hardware — no cloud dependency, no data leaving your machine, no API costs.
Run Llama 3, Mistral, Gemma, and 100+ other open models locally. One command install, OpenAI-compatible API, GPU acceleration built in.
curl -fsSL https://ollama.com/install.sh | sh
ollama run llama3.2
Drop-in OpenAI API replacement for local models. Run LLMs, image generation, audio transcription, and text-to-speech — all self-hosted.
docker run -p 8080:8080 -v $PWD/models:/models
quay.io/go-skynet/local-ai:latest
Powerful node-based workflow UI for Stable Diffusion. Build complex image generation pipelines with a visual graph editor. Modular, extensible, GPU-optimized.
git clone https://github.com/comfyanonymous/ComfyUI.git
cd ComfyUI && pip install -r requirements.txt
python main.py
AI-powered developer tooling for coding, testing, and building AI agents — all open source and free to use.
Anthropic's agentic coding tool running directly in your terminal. Claude Code reads your codebase, makes edits, runs commands, and handles complex multi-file refactors — all through natural language conversation. Free tier available — pay-as-you-go API pricing with no monthly commitment.
npm install -g @anthropic-ai/claude-code
# Navigate to your project and start a session:
cd my-project && claude
# Free tier: pay-as-you-go via API
# Claude Sonnet / Opus / Haiku — no monthly fee
open https://claude.ai/code
Visual framework for building multi-agent RAG applications. Drag-and-drop LangChain components into deployable AI pipelines.
pip install langflow
python -m langflow run
Orchestrate role-based AI agents that collaborate on complex tasks. Define agents, assign tools, and let them work together autonomously.
pip install crewai crewai-tools
crewai create my-agent-crew
Self-hosted frontends and platforms for interacting with AI models through chat, APIs, and custom interfaces.
Feature-rich self-hosted chat interface for LLMs. Supports Ollama, OpenAI, RAG, multi-user, file uploads, web search, and tool calls.
docker run -d -p 3000:8080 --name open-webui
--restart always ghcr.io/open-webui/open-webui:main
Community hubs and registries for discovering, sharing, and downloading open source AI models.
The world's largest open source AI model hub. 500k+ models, datasets, and Spaces demos. Fine-tune, share, and deploy with the HF ecosystem.
pip install transformers datasets
python -c "from transformers import pipeline; ..."
Unified API gateway for 200+ models including open source (Llama, Mistral, DeepSeek) and commercial (GPT, Claude, Gemini). Pay per-token, no subscription.
curl https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-d '{"model":"mistralai/mixtral-8x7b", ...}'