SWIL stands for Simple Win32 Interface Layer.

SWIL is a very thin layer between a C program and the Win32 API. It allows programmers who want to make quick and easy graphical programs on the win32 platform to have very simples primitives to make nice programs in very few time.

Link:	SWIL web site
Download:	The latest snapshot (zip file, 92'493 bytes)
Runs on:	Any Win32 system (Win9x, WinME, WinNT, Win2K)
License:	SWIL Public License (SPL)