Best AI Agent Frameworks

Open source frameworks for building AI agents: multi-agent orchestration, tool calling, and autonomous workflows.

Ranked by score. Updated weekly.

1

langchain

98

The agent engineering platform

136,081Pythonpermissive
2

goose

97

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

44,580Rustpermissive
3

gstack

91

Use Garry Tan's exact Claude Code setup: 15 opinionated tools that serve as CEO, Designer, Eng Manager, Release Manager, Doc Engineer, and QA

91,184TypeScriptpermissive
4

hermes-agent

88

The agent that grows with you

137,881Pythonpermissive
5

mempalace

88

The best-benchmarked open-source AI memory system. And it's free.

51,479Pythonpermissive
6

mempalace

88

The highest-scoring AI memory system ever benchmarked. And it's free.

51,479Pythonpermissive
7

openclaw

86

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

369,538TypeScriptpermissive
8

everything-claude-code

86

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

175,440JavaScriptpermissive
9

cc-switch

86

A cross-platform desktop All-in-One assistant tool for Claude Code, Codex, OpenCode, openclaw & Gemini CLI.

62,758Rustpermissive
10

caveman

86

🪨 why use many token when few token do trick — Claude Code skill that cuts 65% of tokens by talking like caveman

56,196Pythonpermissive
11

CrewAI

86

Framework for orchestrating autonomous AI agents

50,858Pythonpermissive
12

oh-my-claudecode

85

Teams-first Multi-agent orchestration for Claude Code

32,954TypeScriptpermissive
13

AutoGen

84

Programming framework for agentic AI

57,812Pythonpermissive
14

career-ops

83

AI-powered job search system built on Claude Code. 14 skill modes, Go dashboard, PDF generation, batch processing.

43,160Gopermissive
15

LibreChat

83

Enhanced ChatGPT clone with multiple AI providers

36,718TypeScriptpermissive
16

LangGraph

83

Build resilient language agents as graphs

31,463Pythonpermissive
17

CopilotKit

83

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

31,003TypeScriptpermissive
18

Haystack

83

AI orchestration framework for production LLM apps

25,111MDXpermissive
19

dify

74

Production-ready platform for agentic workflow development.

140,535TypeScriptunknown
20

multica

71

The open-source managed agents platform. Turn coding agents into real teammates — assign tasks, track progress, compound skills.

25,941TypeScriptunknown

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