Flostep empowers users to visualize, interact with, and share system design flows with unparalleled ease. This innovative tool allows for the rapid sketching of complex system architectures by enabling users to drag and drop components such as Frontend, Service, Database, Cache, Queue, and External API, or create custom ones. Interactions between these components can be easily defined with labels like "POST /login" or "returns JWT", and then walked through step by step. The active step is highlighted, fading out the rest, making it ideal for design reviews, onboarding, and technical interviews.

• Intuitive Diagramming: Drag and drop components and connect them with labeled interactions to build walkable flows.

• Code-to-Diagram Import: Generate diagrams instantly by pasting plain text descriptions (e.g., A -> B: action).

• Collaborative Feedback: Shareable links allow reviewers to comment on specific steps without needing an account, facilitating asynchronous design reviews.

• Seamless Embedding: Embed interactive walkthroughs into platforms like Notion, Confluence, or blogs using a single iframe.

• Persistent Notes: A dedicated notes panel saves context, trade-offs, and open questions alongside the diagram.

• Cloud Auto-Saving: All changes are automatically saved to the cloud, allowing users to resume work from any device.

• AI Integration: Works with MCP-compatible AI assistants like Claude, Cursor, VS Code, and Windsurf to generate and edit diagrams from natural language descriptions or code.

• Built for Key Moments: Streamline system design interviews, architecture spikes, engineer onboarding, and async design reviews.

Flostep offers a free tier for immediate use, with a Pro plan available for unlimited diagrams and advanced features. Start building your first flow in minutes with no account required to try.