uClibc is a C library for developing embedded Linux systems. It is much smaller then the GNU C Library, but nearly all applications supported by glibc also work perfectly with uClibc. Porting applications from glibc to uClibc typically involves just recompiling the source code. uClibc even supports shared libraries and threading.

In computing, uClibc is a small C standard library intended for embedded Linux systems. It is free software, licensed under the LGPL.