Pushbullet - Pushbullet - Your devices working better together
Snarl - Snarl is a notification system for Windows.
Pushover - Real-time notifications on your Android, iPhone, iPad, and Desktop
Notifo - Notifo is a mobile notifications platform empowering developers to build their own services with a...
Gotify - a simple self-hosted server for sending and receiving messages
Growl for Windows - Growl for Windows is a Windows-compatible version of https://alternativeto.