A shared passion for software is what drives the open-source movement

The Free and Open-Source Software Developers' European Meeting (Fosdem) in Brussels attracts about 3,000 people every year, and last month marked its eighth edition. 

With all the hype surrounding free and open-source tools - the operating system Linux, the web server software Apache, the web browser Mozilla Firefox - it is easy to forget the men (and, occasionally, women) who develop them. It is their shared passion for software that works the way they want it to that keeps this movement going, bringing innovation to computing and the web at a pace that proprietary software developers can only dream of.