So I just moved from Eclipse to IntelliJ after doing some research. The only thing that I miss is that in Eclipse I can have multiple projects in different tabs and compare proj
No, it's not possible. Please vote for this feature request. Note that you can add your multiple projects as modules to Intellij Idea project to be able to view them in a single frame. BTW, there is a document intended to help users migrating from Eclipse to Idea - see this FAQ - you may find it helpful