Pushbullet - Pushbullet - Your devices working better together
Pushover - Real-time notifications on your Android, iPhone, iPad, and Desktop
Tresorit Send - Ultra-secure, end-to-end encrypted large file sharing.
AirMore - AirMore is a cross-platform toolset that can help you manage any Android device wirelessly.
Mobizen - Use your Android from a web browser or desktop.
Kopy - Kopy is the best way to copy/paste your text across your devices.