FastGPT is a free, open-source Enterprise AI Agent Builder providing Agentic RAG retrieval, AI-powered workflows, and MCP tools for easy AI Agent creation.

VoltAgent is an open-source TypeScript AI Agent framework for building, customizing, and orchestrating enterprise-grade AI agents with observability.

kagent is an open-source framework for running AI agents in Kubernetes, automating complex DevOps operations and troubleshooting tasks for platform engineers.

With Code Example provides in-depth programming tutorials and real-world code examples covering AI, Go, web performance, and full-stack development.