Publisheet - Publish your Excel sheets to the web as dynamic web applications with formula support.
API List - A collective list of APIs. Build something.
SpreadsheetWEB - SpreadsheetWEB is a no-code platform that helps businesses translate their collective Microsoft Excel expertise into robust web applications with limited or no reliance on IT resources.
Phantombuster - A marketplace of simple to use no-code APIs
CALCONIC_ - Build & add interactive calculators to your website! Choose from more than 50 premade calculators or build your own from scratch. No coding required. Free plan available. Zapier Integration. Publish Anywhere.
The Unsplash API - No-limits, do-what-you-want API for access to 200K+ HD pics.