Agent frameworksOpen source

Model Context Protocol (MCP)

by Open standard

A shared standard for connecting AI apps to tools and data.

Prices and features change often — check the official site for current plans. This listing is not an endorsement.

Best for

Making your tools usable by many AI apps.

How to choose · Agent frameworks

Start with the simplest loop you can write yourself. Adopt a framework only for a feature you need, and keep your own logic separate.

Learn to use tools like this

Google's open toolkit for building and running agents.

Build teams of AI agents with defined roles.

Popular code libraries for building AI apps, including LangGraph for step-by-step agent flows.

A toolkit focused on connecting AI to your own documents and data.