I don't care what capacity your PC is used in, chances are that some if not all of the data on that machine is critical to your Zen-like well being. So making sure you have a ready-to-go backup might just be a plan worth implementing.
While this software was initially designed for backing up systems, not running Windows, with a little bit of hand holding, you can use Partimage to backup and restore your XP partitions, should the need arise.
Because people are becoming so fed up with many of the closed source alternatives out there, the momentum behind Partimage has been picking up plenty of steam lately and has shown little sign of cooling off anytime soon.
Compatibility: Linux/Bootable CD
I have been one of the many silent, but loyal POPFile users for a number of years now. As a matter of fact, it is one of the first email filtering programs I ever used, way back when. And looking back, it helped me to appreciate a powerful, though cumbersome, email filtering utility.
Regarding POPFile's popularity, it has been what I call a sleeping giant. There are still scores of people who may have never heard of this application for filtering email with Bayesian rules. However, once they understand that it can be trained to filter any way you like (way beyond spam), those users are fans for life. So in the end, I give POPfile points for overall user retention, in addition to amazing growth.
Compatibility: Windows/Platform independent
3. Quanta Plus
For my money (if youll pardon the pun), there is no better open source Website editor than Quanta Plus. Targeted to those who want more than Nvu offers from a Website editor, Quanta Plus most definitely does not disappoint.
Even though Quanta is considered a KDE application, it will work on Ubuntu and other distros that fall back on GNOME as their default desktop environment. And even though KDE makes me gag, I simply love the simplicity of page management, link control and overall feel of the application as a whole.
Likely to be seen as most popular on the KDE (Linux) side of things, I would challenge anyone to tell me that it will not run up to par on my GNOME desktop environment. That, and the sheer number of Ubuntu users using Quanta Plus, is all the proof I need as to its value across both desktop environments. For the web designer with an affinity for open source, it's a must have.