Full-stack platform for MCP servers: open-source TypeScript and Python SDK and CLI, NitroStudio for visual testing, and NitroCloud hosting with GitHub deploys and scale-to-zero.
Framework from LangChain for building stateful, multi-step agent graphs.
Best for: Controllable production agents
Open-source multi-agent framework plus a paid hosted platform.
Best for: Multi-agent teams quickly
Lightweight SDK for building agents with tools, handoffs and guardrails.
Best for: Agents on OpenAI models
TypeScript framework for AI agents, workflows and RAG.
Best for: JS/TS developers building agents
TypeScript toolkit for building AI apps and agents across model providers.
Best for: AI features in Next.js/React apps
Builder.io's open-source TypeScript framework for agentic apps where agent and UI share actions, data and state.
Best for: Building agentic apps with a real UI