Turtal is the underlying run-time abstraction layer that isolates high-level code from the details related to a specific operating system, hardware, or message-passing framework implementation. This library will eventually provide a set of uniform programming interfaces for constructs like message queues, threads, file input/output, timers, and schedulers.
Turtal is part of the Code Craftsmen project. The documentation is hosted on Read the Docs and the source code can be found on GitHub.