ZoomIt - Presentation utility for zooming and drawing on the screen.
Virtual Magnifying Glass - Virtual Magnifying Glass, a free, open source, screen magnification program for Windows, Linux, FreeBSD and Mac OS X. Free full version download and instructions for use.
Zoomtext - ZoomText Magnifier enlarges and enhances everything on your computer screen, making all of your...
Epic Pen - A windows tool for drawing over your desktop and applications
OneLoupe - Get focused on what matters to you with OneLoupe
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica