What are some alternatives?
When comparing re:splashed and LightGallery, you can also consider the following products
Sparkbox - Everyone cares about the homepage, but the truth is that it can be a big time suck without a lot of benefit when you tackle it at the beginning of a project.
Pixave - The ultimate image organizer for the Mac.
Pixabay API - Unlimited API access to 1.2 million CC0 images and videos.
Dropmocks - This website is for sale! dropmocks.