Sideline does not offer an app for your desktop.
However, if you would like to use Sideline to text online, check out Sideline Web, where you can text easily from your computer.
Please Note: You will not be able to place or receive calls through Sideline Web. However, you will be able to see any missed calls and listen to your voicemail messages to help you stay connected.
For more information on web messaging, please view our help site article, "Intro to Sideline Web Messaging"
If you have any further questions, please submit a request.