Linux
pinguiAll OTAMates server software runs on Linux.

Quite simply, without Linux the internet wouldn't be anything like the shape its in today. Many people claim they have never used it. Ever done a Google search? Well, they stand corrected.

Linux is the software which runs servers, and has its roots in Unix dating back to the 60's. Thats a lot of time to spend on security, bug fixing and optimisation.

But it gets better.

Linux is Open Source, in fact the biggest open source system of all time. That means there are "millions of eyeballs" ready to pounce on any issues which need fixing. Or innovations which need adding.

It also means its free.