Piwigo

Piwigo is a photo gallery software for the web that comes with powerful features to publish and manage your collection of pictures.

Piwigo is a free and open-source web-based system, built by an active community of users and developers. Freely available extensions make Piwigo easily customizable. It is notable as a system with many features.

Main Features

• Add Photos Photos can be added via a web form, with an FTP client software, with digiKam, Shotwell, Lightroom, iPhoto (Mac users), Aperture (Mac users) or mobile applications for iPhone/iPad and Android
• Multiple size Each photo is available in 9 sizes, from XXS to XXL, for improved compatibility with various screen resolutions (from smartphones to HDTVs)
• Watermark Piwigo can automatically add a watermark on all photos, to protect photos against unwanted copy.
• Albums Each image is bound to one or more albums. Albums are hierarchical and there is no limit in depth.
• Tags An administrator describes photos with tags, then visitors can browse photos by tags or multiple related tags, for example "night + Paris + John".
• Calendar Extracted from EXIF metadata, Piwigo knows the date of each photo and is able to display photos for a given day, month or year.
• Themes The appearance of the photo gallery is defined by the theme. There are various themes provided by the project community.
• Plugins Plugins expand capabilities of Piwigo. Example of plugins: YouTube, Vimeo, Dailymotion, Google Maps or displaying photos in a Lightbox.
• Access control Access control is handled by the user manager, restricting and granting varying levels of access to photos and albums.
• Notification system Users can be alerted of changes and updates through RSS feeds, E-mail or sharing on social networks Twitter, Facebook or Google+.
• Videos With the use of freely available extensions, Piwigo may also be used to handle videos.