Piwigo

Piwigo is used by millions of people in the world, who need to organize, classify and share media files on the web.
Amateur and professional photographers, clubs and charities, companies, public entities, universities : everyone can use Piwigo.
Professionals use it as a digital asset management software, to classify all their media files and collaborate seamlessly.
Piwigo is open source software : it can be downloaded free on https://piwigo.org, if you want to host it on your own infrastructure.
You can also sign up for the hosted version of Piwigo on https://piwigo.com: we offer a 30 days free trial period.