[fleXive] is a JavaEE 5 open source (LGPL 2.1 or higher) framework for the development of complex and evolving (web-)applications. It speeds up development by easing many tedious and repetitive programming tasks and helping to keep your application(s) flexible during the development-cycle and in production.
Based on the latest industry-standards like EJB 3, JSF, etc. [fleXive] should be your choice for building up your own new application.
10gen is a new platform-as-a-service technology designed to help developers quickly and easily build dynamic, scalable, mission critical web sites and applications.
The 10gen software stack is analogous to Google App Engine in that it provides a new stack of tools (database, grid management, application server) that are purpose-built to run in a cloud environment.