Open Data Inception - 2700+ Open data portals around the World
Mocklets - A HTTP-based API simulator to assist parallel development 🛠️
Mapsense - The API for data-driven mapping
API List - A collective list of APIs. Build something.
OpenStreetMap - OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Semiphemeral - Easily automate deleting your old tweets, likes, and DMs.