Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Files App - Files is a beautiful single-file PHP file browser and manager that can be dropped into any dir on your server, instantly creating a gallery of files and folders.
Creativity 365 - Cross-device content creation suite
VerHost - VerHost is a file sharing platform which has no sign up. Unlimited Uploads and Unlimited Downloads.
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.
Filen - Next Generation end-to-end encrypted cloud storage. Get started with 10 GB of free space.