REMO == Remo Edits Makello Online: you can -- either with a web browser or a face-to-face Ruby application -- define SQL tables, links & indexes. REMO turns this into the framework of an application to manage the data (first sales data, so Makello).
Pakada takes new paths in creating and maintaining dynamic web content. It doesn't provide hardcoded modules, it let's you build them yourself within your browser, though it still ships with a handful of presets. Pakada is based on Ruby on Rails.