
Usually when people mention open source, people think of Linux, Geeks and Creative Commons and gnus (yeah like the animal). Of course open source has always been the key word in Linux development, but it has also become an important factor in software development on commercial platforms as well like Windows and Mac.
One of the best examples we have nowadays is Firefox. The worlds most popular alternative to Internet Explorer is 100% open source and community driven. Who would believe that a non profit organisation that uses thousands of people from all over the world to create software, and a crucial one at that since everybody is online in our society, and actually manage to become of the most recognisable brands in the software industry.
But Firefox is only one example, if you want you can easily do most of your basic stuff on the computer with free software, most of them being open source.
A great website to start your software browsing is Open Source Windows. This website has a very clear and easy to understand list for all your basic computer needs.
I recently got a new computer, and deciding to keep Vista because of my gaming needs, I decided to try to use as many free open source programs on it, and see if it is a liveable option. And is it? Well I believe it is. And all that thanks to the amazing dedication thousands of hobby programmers from all over the world, kudos to you guys and girls!
So here is a brief list (just to partially recap what OpenSourceWindows says) that should get you started with all your basic needs for your daily computer use.
7zip: Usually, when you download something on the internet, if it isn’t an exe file, it is an archive of the type .zip, . rar, .7zip and countless other compression systems. 7zip happens to be one of the best of them and is open source as well as capable of handling most compression systems out there. So there is only need to have this one installed for all your space saving needs.
Firefox: The flagship product of the Mozilla Foundation. Mozilla is an overarching organisation to help the development of open source software, like Firefox.

Thunderbird: Also part of the Mozilla Foundation, this great program has all you need in an email software (well except for Exange) and is a great replacement for OutlookWindows Mail.
Songbird: Aka the iTune killer, also a Mozilla project. This powerful (but still under development) product is trying to give an open source alternative to the most important media player out there. In other words even iPod users can free themselves from the shackles of Apple.
VLC: for all your video watching needs, all rapped in a tight and neat package. A great alternative to the standard Windows Media Player and it has codecs for practically everything.
OpenOffice.org: This is probably the biggest competition Microsoft Office with all the tools you need: either it is the equivalent for Word, Exel, Powerpoint and more. It is just as efficient as Word (although some options may not be exactly the sames) and it is free!
Pidgin: You may have two reasons to want to use that. The first being that you have friends that are spread of several social networks, each with their own instant messengers, forcing you to install five different software just to keep in touch with your neighbourhood friends. Or maybe the instant messenger you use isn’t that great. Well, Pidgin tries to be a universal chat client so that you only need one messenger open at all times, and does a pretty good job at that (I use it both at work and home)
µTorrent: More and more people are using P2P technology to spread their software, mostly because it is not as resource intensive as to host everything on your own server. And the most popular technology to do that nowadays is Torrents. For that you need an efficient and practical torrent client, and µTorrent is at the same time, free, light, easy and very efficient.
Gimp: Adobe Photoshop is probably the most extensive picture editing software on the market, but it is expensive (as in just under $700). Gimp is a free open source alternative, maybe not as powerful as Photoshop, but it does suffice for most of your basic photo editing needs.
Burnaware: A good and simple free CD\DVD and even Blu-Ray burning software with all your basic needs and no publicity or ad-wares. A very powerfull product.
Avast! Antivirus: not open source, but one of the most popular and best free antivirus for personal use, this great program isn’t resource intensive at all (unlike som of its more famous commercial peers) and is easy to use. Great to shield of the computer from all those pesky viruses out there.
By now you should have a fully working computer for all of your basic needs. All legal and all free.
Want more? Well there are a couple of other sites that are interesting:
First there is download.com which is a huge repository of all sorts of softwares, free, shareware and payware, the problem being that there are so many programs that it is not always that easy to find the best one.
Then we have sourceforge.net which is completely dedicated to open source. So if it’s on that site you know it is free and open source. But a lot of the programs there are ongoing projects and so just because it sounds good, it doesn’t mean that it works well…
So there you go, hopefully a first step in a new and liberating open source life 