photolibrary is a Photo gallery based on PHP/MySQL which can be used to store and index photos using EXIF metadata and a fully flexible hierarchical categorisation system, and present them in an easy to use AJAX based web front end.

Features of photolibrary:
- Categorisation: Categories arranged into a tree data structure; Total control of entire structure allowing for a flexible system.
- Searching: Searching by category returns all photos in a category and any child categories; AND boolean search supported; Sort by date / views / views per day / file size / resolution; Jump to date; Calendar view.
- Importing: Import from local directories, compressed folders, URI or file upload; Progress bar.
- Summary statistics: Filesize statistics; Resolution statistics.
- Photo comments: Add comments to photos, sign with name / e-mail; Comments collated on comments page.
- Localisation: Most text loaded from language database.
- Geo-tagging: Assign categories to a geographic area using Google Maps.
- Make/model correction: Set up replace rules for badly formatted EXIF data on camera make/model.