Brimbox is database system that was designed to bridge the gap between spreadsheets and custom databases. It is intended to be an alternative to Access and Filemaker. Although Brimbox has its own modular approach, it is customizable in the spirit of Wordpress, though it is a database interface and not a CMS.
OpenDynamo is a Web site creation, backup, and restore tool with an easy and attractive user interface. It is specifically designed for those with no Web site experience or prior knowledge. With just a few clicks, anyone can create a new site. Editing is similar to composing an email, and can be done through the browser. It is a single script with no external requirements apart from common PHP libraries.
openDCIM is a Web-based data center inventory application which allows you to manage capacity and track assets throughout multiple data centers. There are some graphical elements to the system, but overall, the system is designed for keyboard-friendly (rather than click-happy) use. It is written in PHP and utilizes a MySQL backend for ease of deployment on nearly any LAMP-based build.