Sinov8.net uses an excellent Java Framework to develop most of their solutions such as RPMSonline and RedRabbit.
The framework is called AwareIM. Here's some more info about this amazing development tool:
"Awaresoft Pty Ltd develops AwareIM - an innovative software product that allows a broad range of computer users to create complex, reliable and powerful web-based database applications in a fraction of the time compared to other high-level development tools.
AwareIM provides an easy and efficient way for small and large organizations to automate their business processes and manage their business over the Internet. It does not require knowledge of programming or database design, it automatically generates data forms and manages web access.
Awaresoft has been founded by a team of software engineers with a significant combined experience in developing complex software systems. We have offered AwareIM since 2006 and it is now used in more than 30 countries. Our customers include large corporations, government agencies, research and educational institutions and independent developers.
Awaresoft Pty Ltd is a privately held, profitable company. Revenues are derived from commercial software licenses, application development services, customer support and consulting."