Envira
Functionality: It is easy to use and there is a provided link that allows for it to be placed on any post.
Look: It looks alright and the image size, rows, and columns can be changed.
Options: To get more options, you need to upgrade. There aren’t a lot of options other than the image size and placement.
Responsiveness: It is responsive
Ease of use: It was pretty easy to use.
