Best AI Agent Frameworks

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

Ranked by Coldcast Score. Updated weekly.

1

langchain

98

The agent engineering platform

131,059Pythonpermissive
2

goose

97

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

33,563Rustpermissive
3

NemoClaw

94

Run OpenClaw more securely inside NVIDIA OpenShell with managed inference

16,619JavaScriptpermissive
4

gstack

88

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

46,859TypeScriptpermissive
5

langchainjs

88

The agent engineering platform

17,327TypeScriptpermissive
6

OpenMAIC

82

Open Multi-Agent Interactive Classroom — Get an immersive, multi-agent learning experience in just one click

12,285TypeScriptstrong-copyleft
7

ClawTeam

82

ClawTeam: Agent Swarm Intelligence (One Command → Full Automation)

3,523Pythonpermissive
8

skills

80

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

4,826C#permissive
9

CrewAI

79

Framework for orchestrating autonomous AI agents

47,192Pythonpermissive
10

LangGraph

79

Build resilient language agents as graphs

27,460Pythonpermissive
11

Haystack

79

AI orchestration framework for production LLM apps

24,615MDXpermissive
12

Understand-Anything

78

Claude Code skills that turn any codebase into an interactive knowledge graph you can explore, search, and ask questions about (Multi-platform e.g., Codex are supported).

6,149TypeScriptpermissive
13

gsd-2

78

A powerful meta-prompting, context engineering and spec-driven development system that enables agents to work for long periods of time autonomously without losing track of the big picture

3,138TypeScriptpermissive
14

awesome-codex-subagents

78

A collection of 130+ specialized Codex subagents covering a wide range of development use cases.

2,599permissive
15

chrome-cdp-skill

74

Give your AI agent access to your live Chrome session — works out of the box, connects to tabs you already have open

2,657JavaScriptpermissive
16

prompt-master

74

A Claude skill that writes the accurate prompts for any AI tool. Zero tokens or credits wasted. Full context and memory retention

2,271permissive
17

AutoGen

72

Programming framework for agentic AI

56,192Pythonunknown
18

openclaw-control-center

72

Turn OpenClaw from a black box into a local control center you can see, trust, and control.

2,700TypeScriptpermissive
19

ppt-master

70

AI generates editable, beautifully designed PPTX from any document — no design skills needed | 15 examples, 229 pages

2,901Pythonpermissive
20

Crucix

68

Your personal intelligence agent. Watches the world from multiple data sources and pings you when something changes.

6,833JavaScriptstrong-copyleft