Why do you need crossover if you have VMware Fusion? It works better. Also try Virtualbox.
What kind of software are you looking for? The stock terminal app is fine. Cyberduck for ftp/sftp. Chameleon SSD Optimizer if you put in a non-apple SSD. iStat Menus. KisMac, LanScan, Wifi Analyzer are handy network tools. UnRarX for rar files.