UProc for Sheets - Boost your sales, marketing and IT tasks from Google Sheets
Publisheet - Publish your Excel sheets to the web as dynamic web applications with formula support.
Sheetlist - Discover free Google Sheets for marketing, finance and more
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.
Mattermark in Salesforce AppExchange - Automatically enrich leads in Salesforce with Mattermark
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.