Dashblock - Turn any website into an API
API List - A collective list of APIs. Build something.
Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat
Abstract APIs - Simple, powerful APIs for everyday dev tasks
Postman - The Collaboration Platform for API Development
Phantombuster - A marketplace of simple to use no-code APIs