GovTrack
GovTrack.us civic-tech site tracking U.S. Congress — bills, votes, members, committees, congressional districts. Originally one of the first civic-tech APIs; today its bulk data downloads at govtrack.us/data and its scraper pipeline at github.com/govtrack/congress remain widely reused even as the public REST API has been wound down in favor of api.congress.gov and bulk downloads.
GovTrack is one of 21 APIs that Public Sector publishes on the APIs.io network.
Tagged areas include Federal, Civic Tech, Congress, Bills, and Votes. The published artifact set on APIs.io includes a GitHub repository.