TKIt

TKIt is an open-source software toolkit designed to help developers build cross-platform applications. It provides a modular set of libraries and tools for user interfaces, data models, and inter-process communication, enabling rapid application development with a consistent runtime.

Its architecture centers on a small core runtime that loads optional plugins. Core components include a UI toolkit, a data layer with validation and serialization, networking facilities, and a plugin interface that allows extension without modifying core code. The toolkit emphasizes language bindings and aims to support multiple programming languages through stable APIs and code generators.

TKIt targets Windows, macOS, Linux, and has experimental support for mobile platforms. It ships with a build system integration, a test harness, and documentation generators to assist development and testing.

TKIt is released under an open-source license and is hosted on a public version-control platform. Contributions are accepted through pull requests, with a code of conduct and contribution guidelines.

User communities report that TKIt offers good modularity and a coherent design, though the learning curve can be steep for newcomers and some platforms have uneven widget parity compared to established toolkits.

See also: Qt, GTK, wxWidgets, .NET MAUI.