API List - A collective list of APIs. Build something.
Roivenue - A marketing intelligence suite built to maximize marketing ROI through data-driven marketing attribution and data integration.
Abstract APIs - Simple, powerful APIs for everyday dev tasks
DropUnited - Chrome extension removes United from your flight search
Phantombuster - A marketplace of simple to use no-code APIs
CloudSight - Image recognition API; send an HTTP request with an image, get a description of contents.