All collections

Agent frameworks

The building blocks

Libraries for composing LLM-powered agents. The most mature category — large ecosystems, many integration opportunities, and clear contribution paths.

14 projects7 good first issues61 help wanted

langchain

langchain-ai/langchain
Agent Frameworks

The agent engineering platform

133k 22kPythontoday
18 help wanted

autogen

microsoft/autogen
Agent Frameworks

A programming framework for agentic AI

57k 8.6kPython2d ago
4 good first18 help wanted

llama_index

run-llama/llama_index
Agent Frameworks

LlamaIndex is the leading document agent and OCR platform

48k 7.2kPythontoday
No open beginner issues

crewAI

crewAIInc/crewAI
Agent Frameworks

Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewAI empowers agents to work together seamlessly, tackling complex tasks.

48k 6.6kPythontoday
No open beginner issues

dspy

stanfordnlp/dspy
Agent Frameworks

DSPy: The framework for programming—not prompting—language models

34k 2.8kPython6d ago
1 good first1 help wanted

langgraph

langchain-ai/langgraph
Agent Frameworks

Build resilient language agents as graphs.

29k 4.9kPythontoday
12 help wanted

semantic-kernel

microsoft/semantic-kernel
Agent Frameworks

Integrate cutting-edge LLM technology quickly and easily into your apps

28k 4.5kC#today
No open beginner issues

ai

vercel/ai
Agent Frameworks

The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications and agents

23k 4.1kTypeScripttoday
No open beginner issues

mastra

mastra-ai/mastra
Agent Frameworks

From the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.

23k 1.9kTypeScripttoday
8 help wanted

langchainjs

langchain-ai/langchainjs
Agent Frameworks

The agent engineering platform

17k 3.1kTypeScripttoday
4 help wanted

pydantic-ai

pydantic/pydantic-ai
Agent Frameworks

AI Agent Framework, the Pydantic way

16k 1.9kPythontoday
2 good first

eino

cloudwego/eino
Agent Frameworks

The ultimate LLM/AI application development framework in Go.

11k 827Gotoday
No open beginner issues

langchaingo

tmc/langchaingo
Agent Frameworks

LangChain for Go, the easiest way to write LLM-based programs in Go

9.0k 1.1kGo2mo ago
No open beginner issues

rig

0xPlaygrounds/rig
Agent Frameworks

⚙️🦀 Build modular and scalable LLM Applications in Rust

6.8k 761Rusttoday
No open beginner issues