I like to know how long each of my boxes have been up and running. I really don’t care so much about Windows PC’s, but I really like knowing how long my Linux boxes have been up. Notifications of uptimes are very nice, if a server goes down, I’ll get an email letting me know it’s no longer up and running.
Anyway, for the last year and a half or more I’ve been using The Uptime Project from MrEriksson. I don’t think the project is being developed or even maintained any longer, but it still works very well. All you need to do is get a username and password then download the client for your operating system.
But, I just wanted to point out that one uptime, for router.longren.org. It’s got an uptime of 155 days, almost half a year, by far the best uptime for any box I’ve personally owned. The neat thing about The Uptime Project is that it records reboots and total downtime.