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

langchain

98

The agent engineering platform

136,481Pythonpermissive
2

goose

97

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

45,039Rustpermissive
3

hermes-agent

88

The agent that grows with you

145,346Pythonpermissive
4

langchainjs

88

The agent engineering platform

17,660TypeScriptpermissive
5

skills

88

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

11,737C#permissive
6

openclaw

86

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

371,005TypeScriptpermissive
7

CrewAI

86

Framework for orchestrating autonomous AI agents

51,212Pythonpermissive
8

browser-harness

85

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

12,221Pythonpermissive
9

AutoGen

84

Programming framework for agentic AI

57,953Pythonpermissive
10

LibreChat

83

Enhanced ChatGPT clone with multiple AI providers

36,883TypeScriptpermissive
11

LangGraph

83

Build resilient language agents as graphs

31,811Pythonpermissive
12

CopilotKit

83

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

31,263TypeScriptpermissive
13

Haystack

83

AI orchestration framework for production LLM apps

25,179MDXpermissive
14

OpenHarness

83

"OpenHarness: Open Agent Harness"

12,374Pythonpermissive
15

agent-framework

83

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

10,359Pythonpermissive
16

OpenSpace

77

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

6,122Pythonpermissive
17

dify

74

Production-ready platform for agentic workflow development.

141,028TypeScriptunknown
18

hiclaw

71

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

4,521Shellpermissive
19

aiac

71

3,792Gopermissive
20

autoagent

59

autonomous harness engineering

4,410Python

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