Sites and apps similar to csTimer include Timer, which is free. Other options are Tesseract Speed Cubing Timer and CubeTimer. In total there are three Countdown Timers like csTimer for Linux, Mac and Windows.
Timer is a simple chronometer application. Enter a value and click Start to count down any number of hours, minutes, and seconds, or start at zero to track elapsed time. Available for Macintosh and Microsoft Windows computers.
A speed cubing timer, built with libcosmic and designed for simple but effective solve timing.
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Cube Timer is a simple 3x3 Rubiks Cube Timer application for the gnome desktop. Just long press the space-bar and start solving.
