Ubuntu App Showdown contest was introduced more than a month ago by Canonical to encourage application development for Ubuntu in a big way. And the initiative is showing results already. More than 150 applications were submitted out of which, 133 has been qualified and made it to the final list. Judges will vote on the apps and will declare the winners very soon. Meanwhile, here’s our list of top 15 apps (in no particular order) from Ubuntu App Showdown contest, which we think are the best of the lot. Read on.