Virtual Magnifying Glass is a free and open source cross-platform screen magnification tool. It offers a virtual magnifying glass to help users with low vision and visual impairments to see their computer screen more clearly. It enables users to magnify their screen up to 16x and adjust the lens size, color and brightness as needed. It also provides a variety of other features such as color inverting, color correction, image enhancement, and mouse tracking to make the display easier to read and understand. Virtual Magnifying Glass also includes an OCR (Optical Character Recognition) module that enables users to quickly identify and extract text from images, making it easier to read text from documents or webpages.
Flash to Torch is trying to be a magnifying glass, not a screen magnification tool. My reason for it not being a good alternative. Two completely different applications.