Want to try a private instance on websphere
We have no "formal" support for WebSphere but I believe one of our customers has set up Rollbase with WebSphere in the past. I will check with them to see if they can post a response here about their experience.
I know IBM has a free migration toolkit that should make it easy to migrate from a Tomcat-based installation to WebSphere:
https://www.ibm.com/developerworks/mydeveloperworks/blogs/wasdev/entry/announce_wamt_v35?lang=en
...more info:
http://publib.boulder.ibm.com/infocenter/ieduasst/v1r1m0/topic/com.ibm.iea.wasmt/wasmt/3.5/Overview/WASMTV35_MigrationToolkit.pdf
Hope this helps,
Matt