A note on the numbers: Mozilla Firefox took first place in this exercise in gratitude with an insanely commanding lead; in fact, Firefox got more than three times the amount of votes the second-place mention (VLC) did. Here's a chart of the top eight on the list so you can see how the votes were spread out relative to one another.
About our vote count: We (ok, I) grossly underestimated how many votes we would get on this particular post. Almost 800 comments in total—many of which contained more than half a dozen free software projects—made finishing the total count (36 pages of comments) before Thanksgiving 2011 impossible. So, this represents just over 1,100 votes, only one third of the total comments we received. This list of 40 contains all the apps that received 10 or more votes. As almost 200 mentions got only a single vote, we think that even though it's incomplete, it's closely representative of the general consensus. (You can check out our complete vote count spreadsheet here.) Our apologies for the incomplete count—lesson learned. Next time, we'll use a proper survey tool.