Tools › Agent frameworks

CrewAI

Agent frameworksOpen source
Our take: Role-based multi-agent crews; quick to start.

Use cases: multi-agent teams

Official site: https://crewai.com (link checked 2026-10-14)

Ranked in: Best agent framework

Similar tools

LangChain

Agent frameworksOpen source

The most widely used LLM framework; huge ecosystem, sometimes heavy abstractions.

LLM apps · agents · RAG

LangGraph

Agent frameworksOpen source

Graph-based control for agents that need reliability and state.

stateful agents · multi-agent graphs

AutoGen

Agent frameworksOpen source

Microsoft's multi-agent framework; research-flavored.

multi-agent conversation

LlamaIndex

Agent frameworksOpen source

Best known for data/RAG pipelines over your documents.

RAG · document agents

OpenAI Agents SDK

Agent frameworksOpen source

Lightweight official SDK; minimal abstractions.

agents · handoffs · tool use

Mastra

Agent frameworksOpen source

TypeScript-first agent framework; good fit for JS builders.

TypeScript agents · workflows