What′s this Foto-Plugin?

HI,
very much time I was searching for a special Plugin, now I found it in action, but don′t know how it′s called.
The plugin shows a foto gallery and by clicking a foto, there appears a new page with more details and some more fotos, very good to display products like cars, clothes and others. Here is it in action:
https://modelosparaguay.com/index.php?id=modelos.
Somebody knows how it′s called? Or is this a special Theme?
Thank you very much!