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One specification. Five idiomatic flavors. Predictable MVVM behavior across UI stacks.
VMx is a UI-neutral, lifecycle-aware MVVM viewmodel framework for building hierarchical application state with explicit construction, destruction, disposal, reactive messaging, commands, collections, and composable services. One language-neutral specification defines observable behavior, while five source flavors—C#, Python, TypeScript, Swift, and Rust—preserve each ecosystem’s naming, type, concurrency, and package conventions. A shared conformance catalog keeps those implementations aligned without erasing idiomatic APIs. The source tree currently carries complete 403-ID library coverage in every flavor, with flagship hosts exercising five additional THEME scenarios. Swift is publicly available through SwiftPM; Python’s public package trails the source line, and the C#, TypeScript, and Rust registry channels are prepared but not yet published. VMx therefore separates source completeness from installable-release status and documents both explicitly.
Check source-tree version status and package commands for each flavor.
Build the shared component-plus-composite contract in each idiomatic flavor.
Walk the system, class, and lifecycle diagrams, then browse the full gallery.
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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 403 library IDs aligned across all five catalog-complete source flavors, plus 5 scenario IDs for flagship examples.
- The completed Rust convergence ledger ties its 0.27.0 capability and behavior claims to focused tests.
- 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.