Letta

Looking for a tool like Letta (Open-source framework for stateful AI agents with memory)? Below are 8 AI tools people use as an alternative to Letta, ranked by leaderboard position. Each one is approved by our editors and worth comparing before you decide.

LangChain The most widely adopted framework for LLM applications

Aug 17

Flowise Open-source drag-and-drop builder for LangChain workflows

Aug 17

AutoGPT The project that kicked off autonomous AI agents

Aug 17

Agent GPT Deploy an autonomous AI agent from your browser

Aug 17

Manus The Chinese autonomous agent that went viral in early 2025

Aug 17

Dify Open-source platform for building AI apps and agents

Aug 17

CrewAI Open-source framework for orchestrating multi-agent AI

Aug 17

Coze ByteDance's no-code platform for building and publishing bots

Aug 17