* These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. * These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more.

* Klibc library is optimized for correctness and small size. * Klibc is also technically suitable for embedded software in general, and even some full-featured programmes such as the MirBSD Korn Shell. * Klibc is licensed under the full GPL license, which (unlike LGPL) imposes itself on any code linked with it. (This only applies to klibc as a whole due to embedding some Linux kernel derived files; most of the library source code is actually available under a BSD licence from UCB or the Historical Permission Notice and Disclaimer.) This may limit its applicability to commercial embedded software.