Growl for Windows - Growl for Windows is a Windows-compatible version of https://alternativeto.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Notify OSD - Canonicals on-screen-display notification agent, implementing the freedesktop.
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.
Notifu - Notifu, a free open source pop-up balloon utility
Creativity 365 - Cross-device content creation suite