I came up with Sauna because of the word play of Steem. A sauna is a place you go to be exposed to steam, and my frontend intends to be a where you go to be exposed to Steem. Consider it a continuation of Steem's long tradition of terrible names ;)

Nothing is set in stone though; if I get inspired to a better name I'll go with that. It's not my main concern these days. It doesn't matter what I name it, just how well it works.

I'm using the java programming language for this project. I picked java for security, and because I like the architecture and language. In java, programs run on a standard virtual machine. For this reason, any java executable (an executable JAR) can be copied and run on any computer that can run that virtual machine, which is a lot of them, regardless of operating system or other details of host system implementation.

I'm sure I could get comparable cross-platform compatibility with python, or a lot of other languages, but I like java. There's also virtually nothing built for the Steem blockchain with java, and it's kind of neat to be taking the road less traveled.

Tabs as you describe them here are well within the realm of possibility. This is exactly the kind of feedback I'm looking for! I'll surely come back to this tabs concept as I make more progress. Anything I can do to help facilitate the needs of different users will make Sauna a stronger frontend.

I will certainly keep an eye out for your feedback, and I will definitely send you a little memo when I get around to making my next development update.

Thanks @crypto.piotr!