Gallery 3

Plugin called envira gallery. I do not believe it lets you create other types of galleries for free. All the options need to go to Pro.

Gallery by “Modula” Plugin. A little less gallery options that FooGallery, but the option of manually sizing image is a good addition.  

This is a gallery from the plugin “FooGallery”. The style is carrousel. Lots of options of different galleries are available with the plugin, and each of them can easily be customized on their own.