“Hugging Face”

Small Python library whose agents write their actions as code, with sandboxed execution and tools from MCP servers, LangChain or the Hub.

Open-source Python framework from deepset for modular pipelines and agent workflows covering retrieval, tool use and generation.

All-in-one Python AI framework for embeddings-based semantic search, LLM pipelines, workflows and agents.

Model-agnostic SDK for building agents and multi-agent systems in Python, .NET and Java; Microsoft names Agent Framework as its successor.

Typed Python toolkit for composing classic and agentic retrieval-augmented generation pipelines with pluggable LLMs and stores.