The userland of opuntiaOS contains several custom libraries
- LibC - the standard library for C.
- LibCxx - the standard library for C++, targeting C++17 and above.
- LibObjC - the Objective-C runtime library.
- LibAPI the standard API library.
- LibFoundation - provides a base layer of functionality for apps and libraries which are implemented in C++ and Objective-C.
- LibIPC - manages inter-prcess communication for C++.
- LibG - provides low-level 2D rendering.
- LibUI - provides the required tools to build UI applications.