Provides static methods to detect the operating system (Windows, Linux, macOS, Wine, Flatpak) with minimal dependencies. This self-contained utility isolates platform detection logic, making it reusable in any .NET application needing runtime environment awareness without tight coupling to UI or game-specific code.

Encapsulates cross-platform operations like opening URLs, selecting folders, applying xdelta patches, and executing Java. Each method abstracts platform differences internally, offering a clean, reusable API for common system interactions that could be extracted to a shared library with minimal modification.

A generic XML serializer/deserializer handling versioning, default values, and error reduction. This pattern eliminates boilerplate for XML-based configuration and profiles, allowing reuse across projects by simply defining data model classes and calling static Load/Save methods.

A base button class for Eto.Forms providing consistent hover/disabled states using theme colors. Derived controls (BigColorButton, SmallColorButton, LauncherCheckbox) reuse this foundation, demonstrating a DRY approach to UI theming that can be packaged as a reusable control library for Eto.Forms applications.