Displaperture
Displaperture 1.2 runs natively on both Intel- and PowerPC-based Macs and requires Mac OS X 10.5 or later. Users on 10.4 will want to use Displaperture 1.1
Displaperture brings back rounded screen corners to Mac OS X 10.5 "Leopard". Choose the corners you want rendered as round, choose their radii, and enjoy CRT nostalgia. Version 1.2 adds the ability to round the corners on all attached displays (or just the one with the menu bar).
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Desktop Curtain
Key Codes
Menu Bar Tint
Open-With Manager
Safari Guardian
Service Scrubber