Interview with Vice:
http://www.vice.com/read/greenhouse-app-hannah-ewens-nick-rubin-201Actual app site:
http://allaregreen.us/(Paraphrased from article)
Nicholas Rubin created the app that, when installed on your computer, will highlight any politician's name on an article that you can hover over and see their top contributors by industry. It also shows how much of their donations were less than $200.
The data is taken from OpenSecrets.org, with full data from the 2007- 2012 election cycle for Senators, 2011-2012 for Representatives, and the app is continually updating info as the 2014 election cycle goes on. It goes with Chrome, Safari, and Firefox, and is free. He designed and coded the app on his own.