Tinybeest is described as 'A Mac app and Chrome extension that optimizes/compresses images and PDFs. Tinybeest also converts file formats and resizes images for the web' and is an app in the Photos & Graphics category. There are more than 50 alternatives to Tinybeest for a variety of platforms, including Windows, Mac, Online / Web-based, Linux and Wordpress. The best alternative is ImageMagick, which is both free and Open Source. Other great apps like Tinybeest are Caesium Image Compressor (Free, Open Source), RIOT - Radical Image Optimization Tool (Free), FileOptimizer (Free, Open Source) and ImageOptim (Free Personal, Open Source).
With Image Optimizer you can losslessly optimize your PNG, JPEG and GIF files and thus save your bandwidth and your users' time! Kraken recompresses images with blazing speed and strips metadata with image quality intact.