Growl for Windows - Growl for Windows is a Windows-compatible version of https://alternativeto.
Notifu - Notifu, a free open source pop-up balloon utility
Logwatch - Logwatch is a customizable log analysis system.
Notifo - Notifo is a mobile notifications platform empowering developers to build their own services with a...
TAI .NET - .NET Framework 4.5 is a highly compatible, in-place update to .NET Framework 4.
Notify OSD - Canonicals on-screen-display notification agent, implementing the freedesktop.