NNCMS (NoName Content Managment System) is a simple content management system written in pure C. It requires a Web server with FastCGI support. It is meant to allow control of the content of Web sites using a Web interface. It can generate image thumbnails, and you can browse, edit, remove, and add files.
Compare Ikea Prices is a Firefox addon that displays prices from Ikea stores in other countries and converts the prices to Euros. It works for most Eurozone countries. After installing, it has to be turned on by checking an "Enable price comparing" checkbox in Tools > Compare Ikea prices.
Werc is a minimalistic RESTful Web application framework and content management system. It follows the Unix "tool philosophy" and it is designed to be fast, simple, convenient, and easily extensible. It handles both small and big sites and has a flexible system for user and group permissions. All data is stored in plain text files that can be easily manipulated with standard tools, without using any databases or other external dependencies. Existing applications include a blogging engine with RSS/Atom feeds, a wiki system that can easily integrate pre-existing documents (can be enabled for any directory tree), and others.
blindRSS is a very simple browser-operated RSS reader. You can click through the feeds in a sidebar, use the (hopefully self-explanatory) icons next to them to manipulate them, and do all the other stuff a RSS reader should do. It's programmed so that the feeds are reread by a cronjob or daemon, while as much functionality as possible is done within the client. Thus, the server only serves the data, not the markup.