Wordpress Gallery Plugins Comparisons

Free Version

All have custom link.
Gmedia (4.5): slow loading on mobile
Gallery by supsystic (4.8): extra space at the bottom of gallery when switching to tablet then back to mobile.
Flagallery (4.1): cannot upload photos.
Envira (4.8 rating): Tags at $69 for 3 sites.
NextGen (4.3): Caption is HTML enabled. $79 for one site, $139 for 3 sites. (30% discount with code)