Useful Apps on MAC

1. ITerm2 - One impressive alternative for MAC in-built terminal. You will simply fell for its elegance!
2. Alfred - Your apps/file/folders are just a click away. The best way to discover(!) whats' in you system and where , and to execute certain system commands.. Try it!  Available in AppStore.
3. Jumpcut - Massive Clipboard to ease copy-paste multiple things simultaneously.
4. The UnArchiver - Much needed one for unzipping things.
5. Evernote - My Favorite notebook or dairy I can say it. Cloud based. So no worries of your device change. 
6. Dropbox - Drop your file here to share/store it easily on cloud.
7. Transmission - Alternate for uTorrent lovers. Simple, but they claim specially made for MAC!!
8. Chicken of VNC - Works well for MAC, if you need to view remote machines virtually.
9. Sublime Text2 - Simple notepad. Theme based. You can try xPad too, instead.
10. AppCleaner - MAC simply deletes the app on uninstall. huh! You can use this for cleaning up related file on uninstall.
11. VLC - Much needed for movie lovers. Who cant' be one?!
12. tree/wget - You will miss these on MAC terminal, if you are familiar with linux. Get "tree" from here and "wget" from here, and just place them in "/bin". You get it!