A script that generates loopback interface lines for your /etc/network/interfaces file. Useful for dedicated servers with LOTS of loopback addresses to add all at once.
The NanoURL project is essentially a script similar to the one used at tinyurl.com, which takes long URLs and turns them into shorter and more easily-remembered URLs. Web administration interface and installer included!
Software written in PHP on top of CodeIgniter, used for a wedding website. The link to the source code is a public version of the system that has a few less features than the private versions I created for my and my Friends' Wedding sites.