Flostep - Interactive system design diagrams

Show HN: Flostep – Diagrams people can actually walkthrough

Flostep is a web-based tool for creating system design diagrams that you can actually walk through step by step. Drag and drop components like Frontend, Service, Database, and Cache, connect them with labeled arrows, and then present each interaction sequentially. It's perfect for design reviews, onboarding, and system design interviews. You can try it without an account, share read-only links, embed diagrams on any site, and even let AI assistants like Claude or Cursor build diagrams for you via MCP. Auto-save keeps your work safe, and comments on shared links facilitate async feedback.