Apache Ant is a free software tool for automating software build processes. It is similar to Make, but is much simpler and easier to use. It is implemented using the Java language, and can run on multiple platforms. It is often used by Netcruzer projects. The download from the official site does not contain a Windows installer, and is a bit tricky to install. The WinAnt Windows Installer is the simplest way to install it on Windows.
The official version can be downloaded for free from here. Ant-Contrib is a useful library that provides many additional functions. It is used by Netcurzer ant scripts. A copy of ant-contrib is included in the "./apps/ant-contrib" folder of the Netcruzer Download. It is also included with the WinAnt Installer.