Nextcloud Hub - On-premises, enterprise collaboration solution for documents, emails, calendars and more.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
GreenOrbit - Intranet software with everything you need, built in
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.
Oak Engage - Oak Engage is a digital workplace for enterprises that need to communicate with their workforce. Connect your teams. Engage your people.
Creativity 365 - Cross-device content creation suite