Lychee by Electerious - Lychee is an open-source, free software program for self-hosted photo management. It can be installed on the user's own server or website. The software permits the uploading and management of photos and also makes sharing photos very easy.
F-Stop Media Gallery - Image and video organizer.
Chevereto - Chevereto is a powerful and fast image hosting script that allows you to create your very own full featured image hosting website in just minutes.
A Photo Manager - Manage local photos on Android: gallery, geotag with photomap, tags, find, sort, view, copy...
MediaGoblin - MediaGoblin is a free software media publishing platform that anyone can run.
LeafPic - LeafPic is a fluid, material-designed alternative gallery.