VMx is a lifecycle-aware MVVM viewmodel framework: one language-neutral specification, five idiomatic source flavors, and a conformance catalog that keeps C#, Python, TypeScript, Swift, and Rust aligned.

• spec/ is the source of truth for behavior, lifecycle, and conformance.
• Every flavor implements the shared normative concepts while following native naming conventions.
• The conformance catalog keeps 396 library IDs aligned across all five catalog-complete source flavors, plus 5 scenario IDs for flagship examples.
• Catalog coverage is distinct from member-level surface parity; the remaining Rust convergence backlog is explicit.

• Read Installation for source-tree status and package availability.
• Use Quickstart for the smallest multi-language setup.
• Read Core Concepts before choosing VM families or extension points.
• Use Architecture Map when you want the system view first.