Best Open Source AI Agent Frameworks Tools

Open source ai agent frameworks tools, ranked by score and analyzed honestly. Part of our AI & Machine Learning coverage.

Ranked by score. Updated weekly.

1

langchain

98

The agent engineering platform

139,847Pythonpermissive
2

odysseus

92

Self-hosted AI workspace.

75,210JavaScriptpermissive
3

CrewAI

91

Framework for orchestrating autonomous AI agents

54,108Pythonpermissive
4

skills

90

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

12,732C#permissive
5

hermes-agent

88

The agent that grows with you

199,314Pythonpermissive
6

langchainjs

88

The agent engineering platform

17,828TypeScriptpermissive
7

AutoGen

84

Programming framework for agentic AI

59,099Pythonpermissive
8

LangGraph

83

Build resilient language agents as graphs

35,404Pythonpermissive
9

CopilotKit

83

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

35,382TypeScriptpermissive
10

Haystack

83

AI orchestration framework for production LLM apps

25,623MDXpermissive
11

OpenHarness

83

"OpenHarness: Open Agent Harness"

14,056Pythonpermissive
12

agent-framework

83

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

11,507Pythonpermissive
13

zeroclaw

82

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

31,970Rustpermissive
14

OpenSpace

77

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

6,582Pythonpermissive
15

dify

74

Production-ready platform for agentic workflow development.

146,106TypeScriptunknown
16

hiclaw

71

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

4,889Shellpermissive
17

Shannon

71

A production-oriented multi-agent orchestration framework.

2,030Gopermissive
18

adk-java

67

An open-source, code-first Java toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.

1,611Javapermissive
19

dust

67

Custom AI agent platform to speed up your work.

1,390TypeScriptpermissive
20

autoagent

59

autonomous harness engineering

4,501Pythonunspecified

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