LinkPush!

KDE Connect is a project that aims to communicate all your devices. For example, with KDE Connect you can receive your phone notifications on your computer, or just use your phone as a remote control for your desktop. To achieve this, KDE Connect implements a secure communication protocol over the network, and allows any developer to create plugins on top of it. Currently there are KDE Connect clients on KDE, Android and Blackberry, and soon we will support iPhone as well.

To sum it up, you can:

AirMore is a cross-platform tool to access mobile devices wirelessly over the web. It can transfer Android and iOS device files to PC and vice versa.

Pushover is a simple push notification service that integrates easily into web apps, network monitoring systems, shell scripts, and anything else that needs to send alerts to your mobile devices.

DeskCon integrates your Android Device in the Desktop. Receive Notifications, Files and Commands from your mobile Device on your Desktop PC. The Data is send over a secure TLS Connection. The Connection is encrypted and authenticated with self-signed Certificates (RSA-2048 PK).

Kopy is the best way to copy/paste your text across your devices.

QPush is a free service that lets you easily push text and links from PC to iPhone. No need to send emails to yourself or wait for Evernote to sync anymore!

https://www.youtube.com/watch?v=knmNvtXflOQ

CellSend is a free service that allows you to send texts from your computer to your phone in a fast and easy way.

Quickly send links from your desktop browser to your BlackBerry 10 device.

Push notifications for your site and mobile. Easy connection, automatic scripts. Absolutely free.New, exclusive formats browser notifications are available today for all of our customers. - Interactive notifications with "call to action" element- Messages with two options of interaction - Push notifications with a large image

Pushwoosh is a real time cross-platform push notification service.