Yes, both ImageOptim API and Cloudimage.io offer a Free Trial.
ImageOptim API is designed for Large Enterprises, Medium Business and Small Business.
Cloudimage.io is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for ImageOptim API Starts at $12/Month whereas for Cloudimage.io Starts at $29/Month when Billed Yearly.
Some top alternatives to ImageOptim API includes Resizing.app, Cloudimage.io, Imagekit.io, Imagify, imgix, image4io, EWWW Image, TinyIMG, ShortPixel Google Drive Optimizer, OptimizeImages and ImageBoss.
Some top alternatives to Cloudimage.io includes Imagekit.io, Imagify, ShortPixel, imgix, ImageOptim API, image4io, EWWW Image, TinyIMG, ShortPixel Google Drive Optimizer, OptimizeImages and Optify.