LiveKit

Pi Mono is a comprehensive AI agent toolkit including a coding agent CLI, unified LLM API, TUI and web UI libraries, Slack bot, and vLLM pod management for end-to-end agent development.

smolagents is a lightweight agent framework from Hugging Face for quickly building tool-using LLM agents.

Letta (formerly MemGPT) is an open-source framework for building stateful AI agents with advanced reasoning and transparent long-term memory. It allows you to visually test, debug, and observe agents.

OctoTools is an agentic framework with extensible tools for complex reasoning, featuring a tool card system for flexible composition of diverse reasoning capabilities.