RescueTime

For a month I'm using a web-based application RescueTime. It counts the usage of software and websites on computer so you can find which application you use the most. What is more RescueTime provides ability to assign tags to applications to group them, and to assign efficiency score to each tag. It draws some diagrams shiwing your efficienty so it's much easier to find out whether your are doing something useless to your or perform a productive tasks. And moreover in RescueTime you can create goals on using software, e.g. "Spend less than 1.5 hours per day on games." or whatever can be interpreted as "use something less/greater than..."

I think RescueTime is rather an interseting application that could help better manage time spent with computer.