Workona - A better way to work in the browser.
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.
Session Buddy - Manage Your Browser Sessions
Magnifixer - Magnifixer is a screen magnifier utility.
Toby - Better Than Bookmarks
ZoomIt - Presentation utility for zooming and drawing on the screen.