I’ve always been on the lookout for a small application to remind me to take regular breaks while working, as it’s easy to get involved in what you’re doing and lose track of time.
The few I’ve found in the past have always had their problems, from terrible interfaces to being overly intrusive - think alarm calls and locking the computer. Thankfully I’ve found a great solution - AntiRSI.
As well as reminding you to take breaks, it’s small, unobtrusive and configurable. As an added bonus it takes idle time into account, so if you’ve specified you’d like to take 5 minute breaks each hour and leave the machine idle, the counter for your next break will adjust appropriately.