TSplus Remote Desktop Software - TSplus provides fast and feature-rich Remote Desktop Software for Linux, Windows, and Mac.
Dameware Remote Everywhere - SolarWinds Dameware Remote Everywhere (DRE) is designed as an affordable and powerful cloud-based remote support tool. It doesn't just connect you to machines, it helps you solve your end users problems fast.
Getscreen.me - Remote access from a browser. Free trial is available. Simple and easy to use screen sharing software.
dualmon Remote Access - dualmon Remote Access is prominent remote support and remote desktop solution that enables you to access MACs and PCs from any location.
BeyondTrust Remote Support - BeyondTrust Remote Support is remote desktop access, service desk, and collaboration software for Windows, Mac, Linux, iOS (iPad, iPhone), and Android devices.
TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.