- Simon Brown’s SA4D/C4 model.
You find a brief introduction in one of his blog posts
- You find several links comparing C4 and arc42 in question B17
- The View-Model of Paul Clements et. al from the Software Engineering Institute. From our point of view, their approach is very heavyweight and can become quite formal when applied to real-world projects.
- In case your organization has created its own “Software Architecture Documentation Template”: It should contain quality requirements, a scope/context section and information about building blocks and crosscutting concepts. If it does, you’re pretty close to arc42 anyway…