EtherCalc - EtherCalc is a web spreadsheet.
Glide - Send lightning fast video messages, see responses live or whenever it's convenient. Get closer to the ones you love with video communication.
Aspose.Cells for Cloud - Aspose.Cells for Cloud is a REST based API for processing spreadsheets in the cloud.
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
SSuite Axcel Professional Spreadsheet - This powerful and professional spreadsheet has all the tools you need to calculate, analyse, summarize, and present your data in numerical reports or colourful graphics.
Convertify - Convert your website to an iOS and Android app