You can download the 0.1 of BIXTEP here (Release Notes).

Development version
Download latest development tarball here.

If you want to download the latest development version (not recommended for production use) from the Subversion repository, enter the following command in your terminal:
svn co http://svn2.assembla.com/svn/bixtep/trunk bixtep

Dependencies
In order to use BIXTEP, you need to download and install the XMLStarlet package. The easiest way to install it is using your distribution's package management software.