A TSV is typically referred to as a "flat file". You're going to get a lot of confused looks if you talk about a "TSV database".

That said, you can:

- create an external table in an RDBMS (any of the above will work), which allows you to work on a flat file in place: http://www.fromdual.com/csv-storage-engine

- import the TSV to an RDBMS, work with it, and export it again.

I'm sure someone has written what you're asking for, but I don't get the appeal. RDBMS aren't scary, you can install MySQL and work with it for free, and if you use the GUI tool you don't even have to touch SQL.

edit: Excel is a tool that can edit TSV files, and as a bonus it looks and works exactly like Excel. What exactly do you want?