C4 Digrams done right
After years of working with outdated architecture diagrams, disconnected docs, and systems nobody fully understood anymore, I built Uxxu.
Uxxu is a collaborative software architecture platform built around the C4 model.
Instead of static diagrams that become obsolete after a sprint, Uxxu helps teams create living architecture:
• Connected System Context, Container, Component & Deployment diagrams
• Shared architecture workspaces for teams
• Dependency & complexity analysis
• AI + MCP integrations (Claude Code, Codex, OpenAI workflows)
• Embeddable live diagrams
• Technology lifecycle tracking
• Upcoming: automatic C4 generation directly from code repositories
The goal is simple:
Make software architecture understandable, maintainable, and actually useful again.
Most architecture tools stop at drawing boxes. Uxxu focuses on helping engineering teams manage architectural knowledge as systems evolve.
I’d love feedback from:
software architects
engineering leads
platform teams
developers working in complex systems
Especially curious:
👉 How do you currently document architecture?
👉 What breaks down as systems grow?
👉 What would make architecture docs genuinely useful to your team?
There’s a free plan available for small teams.
Would love to hear what you think 🙌
Guillermo — the architecture documentation problem is real but there's one hiding behind it. At $1,200/mo you have proof engineers will pay. The leak is that most of the people landing on your page are leaving before they even try the free plan — because the page speaks to people who already know C4, not the engineering lead who just Googled "why do our architecture docs keep going stale." That's one headline fix away from changing. I do conversion audits — want me to find exactly where they're dropping off?