11. Lightworks
One of the best free professional video editor. Lightworks has the most comprehensive support available, including native support for MXF, Quicktime, AVI, RED R3D, DPX, Avid DNxHD, ProRes and many more formats, transcoding files on import is something of the past.
12. Skype
Skype is one of the best chat and video messenger with lots of features. Talk to anyone else on Skype, anywhere in the world, for free with a Skype-to-Skype call.
13. VLC media Player
VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVD, Audio CD, VCD, and various streaming protocols.
14. Recuva
Lost something important when your computer crashed? No problem! Recuva recovers files deleted from your Windows computer, Recycle Bin, digital camera card, or MP3 player. One of the best file recovery tool and it’s free!
15. Handbrake
Want to convert your favorite video for your mobile phone, than you have to must try this free app. HandBrake is an open-source, GPL-licensed, multiplatform, multithreaded video transcoder, available for Mac-OS X, Linux and Windows.
Nice list.
How about Revo uninstaller?