Something I really like about the Open Source World is the versatility and usability of almost every system or application and obviously how cheap (or unexpensive) they are.
There are a lot of examples, the Apache Web Server or MySQL and a long list.
For instance if you need to modify your hard drive layout or partitions you can use Gparted and if you need to clone your hard drive (make an exact copy of your hard drive) you can use CloneZilla.
Actually does exist a project called GParted-Clonezilla which provides you on a single CD both solutions.
I just spent 45 minutes downloading the GParted-Clonezilla ISO image.
Really cheap don’t you think?