Arch Linux
I released Pacman 2.6 a couple days ago, which supports some cool stuff like virtual provisions and package replacements. Pacman is well over a year old now, and I'm feeling confident that the source code has been seen by enough eyes that we'll be able to call it a mature piece of software some day.
It's a little exciting to see the power of open source at work. I love coming to my inbox, only to find 3 patches waiting for me from prolific souls around the internet. I've been in the industry for years now, but it's still remarkable to see so many people devote their time and expertise for no monetary gain.
Something to be said for that....
FOAF updates: Trust rankings are now exported, making the data available to other users and websites. An external FOAF URI has been added, allowing users to link to an additional FOAF file.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!