Throttled Pro - Throttled Pro optimizes your internet connection and provides QoS (Quality of Service) to Mac OS X.
ExitLag - There is a world without lags, freezes or loss of data packets. This world is called ExitLag! Get a free trial. Play better who plays with ExitLag!
Ashampoo Internet Accelerator - Ashampoo Internet Accelerator is an internet connection optimizer and booster that allows you to tune your connection settings.
Razer Cortex - A free all-in-one software which gives you the best gaming experience, featuring best gaming deals, PC and Mobile Game Booster, and more!
Net Speed Booster - Net Speed Booster is an internet speed optimization tool that lets you tweak your internet settings and make them up to the mark.
WTFast - Play any online game from anywhere with a smoother connection and lower ping time. wtfast gives your fave games a VIP connection. Free trial available, too.