As you have probably read or heard about or is already in love with GNU/Linux, it is a completely free OS. Linux, copyrighted by Linus Torvalds is the free kernel. Mr.Torvalds started writing the kernel when he was a student in Finland and with lot of developers around the world contributing code and bug fixes, Linux kernel is remarkably stable, fast and provides true POSIX compliance. It is a true multitasking environment.
The free in Linux license implies more on the freedom you have with the source code. This kernel when combined with GNU software can give you a complete OS. Check the GNU site to learn more about their software and the philosophy. GNU project was started by Richard Stallman, without whose software I doubt whether Linux kernel would've been possible at all.
How can Linux help you at home? I have two machines at home, one runs as a server, which runs Apache, MySQL, IP forwarding, Squid etc. The second PC is used as a workstation which has most software I need, and dual boots into Windows 98 and Mandrake Linux 8.0. I rarely boot Windows98 - our banking software was the only application that I use there. This year, even that is not necessary since our bank now has a web based interface and they are throwing out the old program. My wife uses Windows98 because she uses mainly Encarta and Encyclopedia Britannica.
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