RegionLock Away - RegionLock Away is a useful application that allows you to use your Samsung device with SIM cards from other regions from around the world. Samsung currently blocks this functionality using a network blacklist that blocks carriers from other countries.
RegionLock Away works by removing the network blacklist so you can use SIM cards from the blocked regions
GfxBoost - activates "QTV" mode for specific surfaces. This makes for example DirectDraw display smoother and: a bit slower or significantly faster, depending on how you look at it. It also seems to have a small effect on Direct3D/OpenGL.
This is a bit tricky! If you will benchmark it the result will be lower FPS. However, it will actually appear faster
Galaxy S2 SIM Unlock - This program finds the SIM unlock code for your Samsung Galaxy S II (SGS2) GT-I9100 device. It requires root / superuser.
Simply install the application, hit the "SIM unlock code" button, wait a few minutes, and it should come up with the code