A Harvest of Company Details, All in One Basket - NYTimes.com

From a snapshot of a couple public data search sites

"Another site, Enigma.io, has obtained, standardized and collated thousands of data sets — including information on companies’ lobbying activities and their contributions to state election campaigns — made public by federal and state agencies. Starting this weekend, the public will be able to use it, at no charge, to seek information about a single company across dozens of government sources at once.
“What we are trying to do is take these public data sets which, due to the fact of their obscurity, are not currently linked, and go about redressing that,” Marc DaCosta, the co-founder of Enigma, told me recently at the Enigma offices in Lower Manhattan."

A Harvest of Company Details, All in One Basket - NYTimes.com