At one point there were three options to choose from; Rock, Cydia and Icy. The last one in seemed to lack polish of the others but nevertheless worked. Infini Dev Team has taken over support of Icy from Ripdev. The have even been able to get it to work on the iPad with firmware iOS 4.3.2.
That was just practice for the team as they are also about to release Lima. A installer that works over the Safari browser. A first of its kind. The benefits of this method are no need to install an installer to install hacks. All you would have to do is open safari, go to the website and that would be your package installer. This is a great concept that I see working very well.