NAntBuilder is a full-featured Integrated Development Environment (IDE) for NAnt, the popular process-automating tool. It is designed to be a powerul NAnt script creator, editor, and debugger. NAntBuilder enables you to manage your build process easily, allowing you to focus on more interesting and important works. It provides a flexible, easy-to-use platform to author, debug and execute NAnt script.
R2build system is a tool/framework to establish your daily build(or nightly build, or build automation, or continuous integration system) in a very easy way . It includes, but is not limited to, plug-ins for email notification, FTP, various installer packaging tool, Java/C++/Ant/Nant/.Net/Delphi/C++Builder, and various source control tools.