Stuff like Winrar, malwarebytes, and CCleaner are on windows. Basically upkeep, archiving, and general use tools. Freeware is preferable, but if there is something really useful that isn't freeware, so be it. The only names I have right now are Sophos, Onyx, and Microsoft office. I'm sure there's more stuff than that out there though. Also, is there a Mac equivalent for foobar? I'm not a huge fan of iTunes.