# opensource

Flowise wraps LangChain, LangGraph, and LlamaIndex in a visual canvas so you can build RAG bots and multi-agent workflows without writing boilerplate. Apache-2.0, self-hostable, and free. Here's the honest deep-dive.

RAGFlow is an Apache-2.0 RAG engine built around DeepDoc, a neural document parser that understands tables, scans, and layouts most RAG stacks mangle. Here's how it works, what it costs, and where your data lands when you self-host it.

DeerFlow 2.0 is a ground-up rewrite from ByteDance: a SuperAgent harness that orchestrates sub-agents, sandboxes, long-term memory, and skills to run hours-long tasks entirely on your own hardware. Here's the honest deep-dive.