Bike is a Web application framework that can make feature-rich applications using HTML files only. You need no database setup (by default), no scheme definition, and no command-line voodoo. Just put a good old HTML file under skin/, and your new app is already running. Bike is front-ended by Rack, back-ended by Sequel.
RackMap is a Web-based datacenter management tool. It was designed to help organisations catalog and manage datacenter assets such as racks, servers, routers, and switches. It allows you to catalog hardware location and cabling information, export data in various formats including PDF, generate bulk configuration scripts, and remotely control some devices.