Tkinter, wxPython, Mac OS X (PyObjC) and Win32 event loops.</p>

<h2><a href="https://www.uclibc.org/">uCLibc</a></h2>

<p>uClibc (pronounced yew-see-lib-see) is a C library

for developing embedded Linux systems. It is much smaller than 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. It currently runs on standard

Linux and MMU-less (also known as uClinux) systems with support for

alpha, ARM, cris, i386, i960, h8300, m68k, mips/mipsel, PowerPC, SH,

SPARC, and v850 processors.</p>

<h2><a href="http://www.winehq.org/">Wine</a></h2>

<p>Wine is an Open Source implementation of the Windows API on top of

X and Unix.  It is a compatibility layer for running Windows

programs. Wine does not require Microsoft Windows, as it is a

completely free alternative implementation of the Windows API

consisting of 100% non-Microsoft code, however Wine can optionally use

native Windows DLLs if they are available. Wine provides both a

development toolkit for porting Windows source code to Unix as well as

a program loader, allowing many unmodified Windows programs to run on

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