This is a public open service for comparing trends in software technologies.

It is available for public use at http://www.codetrend.org/

Currently it only uses StackExchange data, but in the future I envision it pulling additional signals like google trends, ohloh, github, tiobe.

Moreover, since these comparisons are so subjective, I'd like to see this site be a place where people can express their opinions comparing competing technologies. If we provide a medium for these opinions that can aggregate them intelligently, then we will have a truly useful and self-supporting resource.

Want to help out? Fork the code at https://github.com/leopd/codetrend and send a submission. Or contact Leo directly: http://leodirac.com/contact

First download the most recent SO data dump from http://www.clearbits.net/creators/146-stack-exchange-data-dump This involves torrenting, and then recombining all the stackoverflow.com 7zip files.

Once you have the stackoverflow Posts.xml file reconstructed, you need to run some rake commands:

rake db:mongoid:create_indexes
rake datadump:load FILENAME=../path/to/stackoverflow/Posts.xml DATASET=stackoverflow-posts
rake datadump:create_all_technologies

Note that these commands can take hours even on a fast machine.
Feel free to dive into the TODO comments to speed them up.