Iceberg is a 100% web based platform for building, sharing and selling powerful business applications. Build or configure your own apps using workflow, forms, reports, lists, web services, views, relational tables, charts, calendars and much much more. http://www.icebergondemand.com/

Openkapow is an open service platform, this means that you can build your own services (called robots) and run them from openkapow.com, all for free. These robots accesses web sites and allows you to use data, functionality and even the user interface of other web sites in a whole new way. No longer are you limited by what public APIs or RSS feeds...

A simple, powerful new way to create web-based business applications that can be used by anyone, anytime, anywhere! Coghead is the one do-it-yourself web application platform that can handle all of your projects from beginning to end. http://www.coghead.com/