Corner is a program for calculating odd corners made from sheetmaterials like aluminium, steel, or glass. It could be the corners of aluminium- or steelfacades - or perhaps strangely-shaped fishtanks... Useful if when you need it.

Hot Corners lets you quickly activate or disable your screen saver by moving the mouse into any corner of the screen that you set. This is particularly useful when you need to ensure you privacy and security when you are away from your computer.