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

136,766Pythonpermissive
2

skills

90

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

11,826C#permissive
3

hermes-agent

88

The agent that grows with you

150,779Pythonpermissive
4

langchainjs

88

The agent engineering platform

17,667TypeScriptpermissive
5

CrewAI

86

Framework for orchestrating autonomous AI agents

51,427Pythonpermissive
6

AutoGen

84

Programming framework for agentic AI

58,035Pythonpermissive
7

LangGraph

83

Build resilient language agents as graphs

32,080Pythonpermissive
8

CopilotKit

83

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

31,415TypeScriptpermissive
9

Haystack

83

AI orchestration framework for production LLM apps

25,232MDXpermissive
10

OpenHarness

83

"OpenHarness: Open Agent Harness"

12,554Pythonpermissive
11

agent-framework

83

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

10,444Pythonpermissive
12

OpenSpace

77

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

6,183Pythonpermissive
13

dify

74

Production-ready platform for agentic workflow development.

141,420TypeScriptunknown
14

hiclaw

71

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

4,565Shellpermissive
15

Shannon

67

A production-oriented multi-agent orchestration framework.

1,853Gopermissive
16

adk-java

67

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

1,553Javapermissive
17

autoagent

59

autonomous harness engineering

4,423Python

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