ErgoMonitor is a computer ergonomics application running under Microsoft Windows. It monitors your mouse and keyboard activity. In a personal profile you can set workpace- and time- threshholds to trigger alert messages. ErgoMonitor records many statistical aspects of your computer activity. You can opt to graphically display these statistics real-time. Moreover, you can export them to your favourite spreadsheet program. ErgoMonitor makes you aware of your working habits. Make your choice from a simple signaling trayicon to audible and visible alert messages, and realtime display of your activity-trace and workload. ErgoMonitor can help you prevent symptoms of RSI. Make different profiles for different types of computer activity. Exchange profiles with colleagues. Install by unzipping the files to the directory of your choice and run the executable. ErgoMonitor does not write in the Windows registry. It occupies just a few hundred kilobytes on your hard disk. You can even carry it around and run it from a floppy.