Snarl - Snarl is a notification system for Windows.
Notifo - Notifo is a mobile notifications platform empowering developers to build their own services with a...
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.
Hubgets - Chat, voice, and video turning team communication experience into knowledge to help your business get more productive
Notify OSD - Canonicals on-screen-display notification agent, implementing the freedesktop.