Agent Framework

AgentOS

Open-source TypeScript agent runtime whose agents can forge their own tools

Google Agent Development Kit (ADK)

Google's open-source, code-first framework for multi-agent AI

LangGraph

Open-source graph framework for durable, stateful AI agents

Microsoft Agent Framework

Successor SDK to Semantic Kernel and AutoGen

OpenAI Agents SDK

OpenAI's small-footprint framework for agents, handoffs and guardrails in code

VoltAgent

Open-source TS agent framework with a paid observability console