E-mage is described as 'From developers to developers: a cross-platform tool for losslessly image compression'. There are more than 50 alternatives to E-mage for a variety of platforms, including Windows, Online / Web-based, Mac, Linux and Wordpress. The best alternative is Caesium Image Compressor, which is both free and Open Source. Other great apps like E-mage are ImageOptim (Free Personal, Open Source), RIOT - Radical Image Optimization Tool (Free), FileOptimizer (Free, Open Source) and Squoosh (Free, Open Source).
Mini-Compressor is an easy to use image compression tool. Compress images by right clicking on the images or folder of images. A viable alternative to other photo editing software if all you need to do is quickly compress a image.
Effortlessly compress your images without loss of quality. Aerate offers an industry leading default mode, as well as new fast and extreme presets. Switch between modes quickly using the new compression slider.
Image Compressor is a desktop software to compress images in your computer and/or change the extension. You could reduce up to 99% of the original size! Compress any image and save size with almost the same quality.