Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Publisheet - Publish your Excel sheets to the web as dynamic web applications with formula support.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
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.
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
SpreadsheetConverter.com - Use online spreadsheets, smart forms and beautiful charts in your blog or website. Put your booking and order forms online. Show live charts. Change any cell and the online spreadsheet or live chart immediately updates itself.