Re: Enterprise are going free now anyway...
Might try 7zip, I heard they beat WinRAR for compression and I think are freeware?
As for Trillian, I've used them for yonks, and given their aggregation and syncing between computer, webpage, and mobile app versions I do believe they're worth tossing some money at. I went for lifetime ($60 one time) back when they started asking, think it's still very good value for being used lots every day with no ads (versus the services it links with). Call it supporting a cause.