Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Growl for Windows - Growl for Windows is a Windows-compatible version of https://alternativeto.
Snarl - Snarl is a notification system for Windows.
Logwatch - Logwatch is a customizable log analysis system.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Notifu - Notifu, a free open source pop-up balloon utility