calculator lock

Single-color calculator with big convenient buttons.

HP-41C/CV calculator emulator.

Powerful calculator with a simple console interface.

Photo Calculator for Mac contains depth of field tables and more.

Fertility calculator.

Prevent left/right drift when plugging in headphones.

Locks your Mac when you walk away.

Bluetooth-activated screen locker.

You can create Flash Preloaders in seconds with SWF.

Know how much to tip.