Recently, in our post on the Unofficial Chicago Transit Authority API we reported on this unofficial transit API for the CTA. The API enables developers to build applications that present CTA bus routes, schedules, and arrival predictions. This API is "unofficial" because it is not officially documented by the Chicago Transit Authority, but comes to us by virtue of developer Harper Reed.
Government watchdogs Sunlight Labs has released a new Influence Explorer Text API. The new API provides rich data on the political influence of individuals and organizations in Washington DC. Last month Sunlight Labs released Inbox Influence, a new tool that allows you to see the political contributions of the people and organizations, while viewing emails in Gmail. The Influence Explorer Text API provides developers with the same data, to build their own political influence applications and plugins.
In 2005, GovTrack paved the way to open legislative data in a structured format. Through years of persistence, GovTrack prompted partner organizations and the government itself to open government data in formats and at a scale never seen before. Now, GovTrack passes its mission to other hands.