Provides native Win32 open source ports and utilities
GnuWin provides Win32-versions of GNU tools, or tools with a similar open source licence. The ports are native ports, relying only on libraries provided with any modern 32-bits MS-Windows operating system, such as 2000 / XP / Vista / 7
A Java Wrapper for Windows API functions.
This project is a set of Java wrapper classes for Win32 API functions. There is a parallel project called J7Linux which is the equivalent for Linux/Unix systems.