* [Runtypes v7.0.5](https://github.com/runtypes/runtypes) – Runtime validation library for TypeScript types, providing composable validators for primitives, literals, arrays, tuples, objects, unions, and intersections.

* [TSTyche v7.2.3](https://github.com/tstyche/tstyche) – TypeScript type-testing tool with describe/test helpers, expect-style assertions, and a configurable test runner.

* [Sorbet 0.6.13449.2026082611...](https://github.com/sorbet/sorbet) – Fast, powerful type checker designed for Ruby with gradual typing support.