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

50,201Rustpermissive
2

langchain

98

The agent engineering platform

140,233Pythonpermissive
3

odysseus

92

Self-hosted AI workspace.

77,957JavaScriptpermissive
4

CrewAI

91

Framework for orchestrating autonomous AI agents

54,389Pythonpermissive
5

skills

90

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

12,797C#permissive
6

hermes-agent

88

The agent that grows with you

203,226Pythonpermissive
7

langchainjs

88

The agent engineering platform

17,851TypeScriptpermissive
8

eliza

87

Open source agentic operating system

18,646TypeScriptpermissive
9

openclaw

86

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

380,492TypeScriptpermissive
10

zeroclaw

85

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

32,041Rustpermissive
11

browser-harness

85

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

15,363Pythonpermissive
12

AutoGen

84

Programming framework for agentic AI

59,263Pythonpermissive
13

LibreChat

83

Enhanced ChatGPT clone with multiple AI providers

39,825TypeScriptpermissive
14

LangGraph

83

Build resilient language agents as graphs

35,779Pythonpermissive
15

CopilotKit

83

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

35,522TypeScriptpermissive
16

Haystack

83

AI orchestration framework for production LLM apps

25,730MDXpermissive
17

OpenHarness

83

"OpenHarness: Open Agent Harness"

14,177Pythonpermissive
18

agent-framework

83

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

11,672Pythonpermissive
19

OpenSpace

77

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

6,610Pythonpermissive
20

dify

74

Production-ready platform for agentic workflow development.

146,599TypeScriptunknown

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