Best Open-Source AI Tools, Ranked by GitHub Stars

n8n is an open-source workflow automation platform that lets users build complex automations through a visual, node-based interface

Run open LLMs locally with a single command.

Langflow is an open-source, low-code visual builder for creating AI agents, RAG applications, and MCP servers

Open-source platform for building production-ready LLM apps and agents.

Framework and platform for building LLM apps and agents

High-throughput open-source LLM inference engine

Open-source autonomous coding agent for VS Code that runs on your own model API keys.

Flowise is an open-source visual builder for creating LLM applications and AI agents using a drag-and-drop interface

Data framework for LLM apps and knowledge agents

An open-source terminal pair-programmer that edits your code and commits to git.

Open-source vector database built for scale

Continue is an open-source AI coding assistant that brings autocomplete, in-IDE chat, and agentic edits to VS Code and JetBrains, with support for any model.

High-performance open-source vector search engine

Open-source, self-hosted AI coding assistant you run on your own hardware

Open-source LLM observability and evaluation

Open-source embedding database for AI apps

Open-source AI-native vector database

Open-source AI gateway and control plane for production Gen AI.

AI coding agent built for JetBrains IDEs

Open-source LLM observability and AI gateway in one line of code.