Browsers

Flashblock
Lorenzo Colitti(Free)
Download
Block Flash from hogging your browser
TweetDeck
Twitter Inc.(Free)
Download
Comprehensive Review of TweetDeck for Mac
BitTorrent Surf
BitTorrent(Free)
Download
BitTorrent Surf: A Simple BitTorrent Client for Chrome
Gspace
Getgspace(Trial version)
Download
Use Gmail for free online storage with Gspace
anonymoX
anonymoX.net(Free)
Download
Effortless Anonymous Browsing with anonymoX for Firefox
browserTunes
Markburgess(Free)
Download
Control iTunes from any web browser
Yandex.Browser
Yandex(Free)
Download
A free app for Mac, by Yandex.
Safari AdBlocker
SweetP Productions(Free)
Download
Safari AdBlocker Review
Stainless
Mesa Dynamics, LLC(Free)
Download
Stainless: An Innovative Browser with Parallel Sessions
Unity Web Player
Unity Technologies(Free)
Download
An Interactive Flash Game Made Easy With Unity Web Player