List of free image-gallery stuff for developerππ½
If you're looking for all programming tools around image-gallery (not just free). Check this page List of image-gallery Programming Tools

Sirv
Sirv helps you and your team manage, transform, optimize and deliver digital assets for faster websites and apps. Increase your conversions with Sirv today.
Tag: CDN, 360-spin, image-gallery
Media CDN File uploads Easy file management Image processing Image optimisation Video streaming 360 spin serving 500 MB file storage 2 GB / month CDN transfer