After a pre-study in the year 2001-2002 financed by VINNOVA , a prototype based on the Activity Theory model was constructed to demonstrate the usability of mobile IT in mobile healthcare. The prototype was developed in PHP on Apache and deployed on a Microsoft Windows Server 2000 computer, which was also installed a MS SQL server 2000 for the database. This prototype is considered as a throwaway one, since it was developed mainly to demonstrate a basic architecture for the healthcare databases. As the IMIS project goes into more specific, there are needs for building up a new prototype, which is considered to be evolutionary prototype, i.e. a prototype to be successively constructed to the final system. To this purpose, this report will evaluate different development platforms for the new IMIS construction. This report evaluates two development platforms, namely Microsoft .Net and Java from Sun, which are most applied in software development.