QA Tools allow you (the software product maintainer) to automatically generate regular releases and/or snapshots of your product. Your product can be distributed as a source code archive (typically .tar.gz) or as a binary distribution archive (.deb, .rpm, or .exe). It currently works with software packages that have source code managed using Subversion and that use autoconf/automake.
rvi is a wrapper script which gives you an easy way of integrating RCS with your existing vim/vi work environment. Simply use "rvi filename" instead of "vim filename", and the file will automatically be checked into revision control, and the changes you made after the edit will be displayed each time you finish editing.
Qubit (Qmail Ultimate Backend Integration Tool) is a fully Web-based qmail server configuration and administration suite. It is based on the qmailrules qmail server installation style. It has the same features as other similar tools (like vqadmin and qmailadmin), and it also gives you full control to administer your server with all sorts of features and applications.
commitrc is a tool to put your /etc files (and the like) under CVS or SVN. It is useful to see differences in /etc/passwd, routing information, and DNS zones, and to keep an history of what happened to the box. It is also a safe backup of configurations when tweaking software behavior.
htb-stats.sh is a useful script for htb class summarization. It's designed to allow simple, non-root usage, e.g. "./htb-stats.sh eth0". If an htb.init, tcng.init, or htb-gen configuration is found, it will label traffic output with information taken from respective configuration files.