Best Framework tools for AI agents
11 tools picked from the Agent Toolbox directory. Listed in directory order, not a paid or tested ranking.
1. LangChain
Framework for building LLM apps and agents (Python/JS).
python · js · open-source
2. LangGraph
Stateful, graph-based agent orchestration.
python · js · open-source
3. LlamaIndex
Data framework for RAG and agents.
python · rag · open-source
4. CrewAI
Multi-agent role-based orchestration.
python · multi-agent · open-source
5. AutoGen
Microsoft's multi-agent conversation framework.
python · multi-agent · open-source
6. OpenAI Agents SDK
Lightweight SDK for multi-agent workflows from OpenAI.
python · open-source
7. Vercel AI SDK
TypeScript toolkit for AI apps, tool calling and agents.
typescript · open-source
8. Pydantic AI
Type-safe agent framework from the Pydantic team.
python · open-source
9. smolagents
Hugging Face's minimal code-agent library.
python · open-source
10. Mastra
TypeScript agent framework with workflows and memory.
typescript · open-source
11. DSPy
Program and optimize LM pipelines declaratively.
python · open-source
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