Web

• Firefox
• Flock

Communications

• MSN Messenger
• Skype
• Adium
• Tweetdeck

Music & Video

• Quicktime Player
• Realplayer
• VLC
• Vuze

Utilities

• MAX (flac-->mp3 converter etc)
• Switch (wma -->mp3 converter) need to upgrade
• Audacity (audio converter)
• Cyberduck (Publishing software for webmaking)
• Poladroid (Polaroid effects)
• Silverkeeper (Backup data)
• GrandPerspective (Data organisation)
• Adobe Creative Suite

Others

• Last.fm
• Omni outliner
• StuffIt (Expander)
• xACT (Audio compressor)
• Flip4MAC (plugin)