Dropbox - Online Sync and File Sharing
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
Creativity 365 - Cross-device content creation suite
Mega - Secure File Storage and collaboration
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.