The FULL TOra was included with RedHat v7.2 and v7.3 not timeout or anything I could see... So, I am thinking your statement is right.
Somewhat ambiguously, it says: "If you are using this program in your work on Windows you need to purchase a commercial license." First nine licenses $100 apiece; drops succesively to $50 per head in lots of 100+ ... But, does this mean, if you use it commercially -- "in your work" -- on platforms *other* than Windows, it's free (as in beer)?
And TOAD, has been in use by PeopleSoft nearly since the begining, TOAD is a great interface, but lacks in somethings like cross platform capacity. Was really the ONLY thing holding up the DBA at GRCC from going straight Linux for his workstation.

He has/had VMWARE on linux for his Windows work.