Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Sheetgo - Connect spreadsheets. Automate your work.
Microsoft Teams - Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.
Aspose.Cells for Cloud - Aspose.Cells for Cloud is a REST based API for processing spreadsheets in the cloud.
RingCentral Video - Live life unlimited. Free video meetings and team messaging in one app that works the way you do.