What do your students think about these applications? Which ones do they like the most?
When I have integrated open source software into my instruction, I find that my students enjoy it. It might look differently from what they’re used to, but that doesn’t bother them. If anything, to them, it’s almost like exploring an uncharted land. The applications that they seem to like best are presentation software, like LibreOffice Impress, and mind mapping software, like FreeMind. I believe that this is because there are no pre-defined expectations as to what the end product should look like.
As I once said, children are uninhibited by preconceived ideas. They just sit down and begin creating.