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.
WebMCP is a Web application framework. Instead of using the classical Model-View-Controller (MVC) concept, WebMCP makes use of a so-called Model-View-Action concept. The database is accessed through the Model layer, which provides an Object-Relational-Mapping (ORM). HTTP-GET requests are handled by Views, which process the request data, query the database, and render the result. HTTP POST requests are handled by Actions, which can write to the database and redirect to a View, dependent on success or failure.