Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Aspose.Cells for Cloud - Aspose.Cells for Cloud is a REST based API for processing spreadsheets in the cloud.
TogetherDB - A simple, modern and powerful online database running on a real MySQL or PostgreSQL database, with fine granular permissions, SQL bookmarks, user groups management and more.
EtherCalc - EtherCalc is a web spreadsheet.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
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.