AI tools · 79 listed

Find the right AI tool.

Pick a category to see tools, what each is best for, and how to choose between them.

Tools change fast. Prices and features move, so we don't copy prices here. Open the tool's own site for current plans. Listings are not paid placements or endorsements.

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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.

7 tools

Agent frameworksOpen source

Model Context Protocol (MCP)

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

Best for: Making your tools usable by many AI apps.

Agent frameworksOpen source

Agent Development Kit (ADK)

Google's open toolkit for building and running agents.

Best for: Agents on Google's cloud, including Kotlin and Android.

Agent frameworksOpen source

CrewAI

Build teams of AI agents with defined roles.

Best for: Role-based multi-agent projects.

Agent frameworksOpen source

LangChain & LangGraph

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

Best for: Agents with clear control flow, loops and approvals.

Agent frameworksOpen source

LlamaIndex

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

Best for: Search and question-answering over your data.

Agent frameworksOpen source

OpenAI Agents SDK

OpenAI's toolkit for building agents with tools and hand-offs.

Best for: Agents that mainly use OpenAI models.

Agent frameworksOpen source

smolagents

A small, simple library for building agents in a few lines.

Best for: Learning how agents work with little code.