Best Open Source Agent Frameworks

General-purpose AI agents and harnesses you can build on: openclaw, goose, LibreChat, and more.

Ranked by score. Updated weekly.

1

goose

100

an open source, extensible AI agent that goes beyond code suggestions - install, execute, edit, and test with any LLM

50,097Rustpermissive
2

langchain

98

The agent engineering platform

140,038Pythonpermissive
3

odysseus

92

Self-hosted AI workspace.

76,996JavaScriptpermissive
4

CrewAI

91

Framework for orchestrating autonomous AI agents

54,261Pythonpermissive
5

skills

90

AI skills framework by MiniMax for building task-specific AI agents.

12,762C#permissive
6

hermes-agent

88

The agent that grows with you

201,223Pythonpermissive
7

langchainjs

88

The agent engineering platform

17,845TypeScriptpermissive
8

openclaw

86

Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞

380,184TypeScriptpermissive
9

zeroclaw

85

Fast, small, and fully autonomous AI personal assistant infrastructure, any OS, any platform — deploy anywhere, swap anything 🦀

32,011Rustpermissive
10

browser-harness

85

Self-healing browser harness that enables LLMs to complete any task.

15,290Pythonpermissive
11

AutoGen

84

Programming framework for agentic AI

59,190Pythonpermissive
12

LibreChat

83

Enhanced ChatGPT clone with multiple AI providers

39,704TypeScriptpermissive
13

LangGraph

83

Build resilient language agents as graphs

35,590Pythonpermissive
14

CopilotKit

83

The Frontend Stack for Agents & Generative UI. React + Angular. Makers of the AG-UI Protocol

35,444TypeScriptpermissive
15

Haystack

83

AI orchestration framework for production LLM apps

25,650MDXpermissive
16

OpenHarness

83

"OpenHarness: Open Agent Harness"

14,104Pythonpermissive
17

agent-framework

83

A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

11,603Pythonpermissive
18

OpenSpace

77

"OpenSpace: Make Your Agents: Smarter, Low-Cost, Self-Evolving" -- Community: https://open-space.cloud/

6,595Pythonpermissive
19

dify

74

Production-ready platform for agentic workflow development.

146,365TypeScriptunknown
20

hiclaw

71

An open-source Collaborative Multi-Agent OS for transparent, human-in-the-loop task coordination via Matrix rooms.

4,907Shellpermissive

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