Dataset Search - Making it easier to discover datasets. Made by Google.
Vacuum Data - Instant access to all* open data from a single place
AnyPicker - Scrape web data without any code, just click what you see.
Mapsense - The API for data-driven mapping
Medium API - Official Medium API
OpenStreetMap - OpenStreetMap is a map of the world, created by people like you and free to use under an open license.