Rest Reminder is a small utility which i wrote long time back to monitor computer activity and reminds me to take rest after every 30 minutes. I wrote this because once i start working i forget about everything else and this lead to dry eyes, irritation etc.This is the second version supporting Multiple monitors, Alpha Transparent block screen and Vista Compatible.
Unlike most such utilities this is free. You can specify after how much time of activity you want to take rest and for how long. And how long of inactivity will reset this time. This also comes facility to lock screen quickly or when there is a certain inactivity period.
Usage is very simple , Download and extract the program and then run the RestReminder.exe . After that configure the settings and press Apply to save changes. Press the close/hide button and let it go in the task bar.