Several software magnifiers

For various reasons, I have been looking for software tools able to magnify an image or a zone of the computer screen. Here are some of the links I collected this way:

• The Microsoft PowerToys include a Windows XP screen magnifier that can be installed in the taskbar.
• ZoomAView – The Computer Magnifier!: A powerful, easy to use computer desktop screen magnifier. Features magnify zoom levels up to 32x, moveable, sizeable lens window, locked or “mouse-region” view, selectable cursor style, reverse colors in view (photo negative), and more.
• The Magnifier (by Iconico): Simple and easy to use, the Magnifier is always handy for when you need to see all the details. Magnifier has the following features: – Totally 100% Free! – No popup adverts or spyware, it really is free – Easy to use with any other program – Resizable magnification area – Adjustable zoom factor – Overlay a grid for quick alignment