CellSend is described as 'free service that allows you to send texts from your computer to your phone in a fast and easy way'. There are more than 10 alternatives to CellSend for a variety of platforms, including Android, Windows, Android Tablet, Linux and iPhone. The best alternative is KDE Connect, which is both free and Open Source. Other great apps like CellSend are Pushbullet (Freemium), AirMore (Free), Gotify (Free, Open Source) and Pushover (Paid).
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.
Join is a mobile and desktop application that lets you remotely control many aspects of your Android phone through Tasker integration, as well as send and receive files, SMS, screenshots. It also has universal copy/paste and screenshot mirroring.
Notify17 offers its customers a single location where they can centralise all their notifications. How frequently do we happen to miss emails containing an alert, just because our inboxes are too crowded? Features: