4images is a free open source image gallery management system that provides the convenience of a web-based photo gallery with unsurpassed power and a flexible feature set. Some of the features included with 4images include an interactive comment system, user management and registration, a n upload area that works with all major web browsers, a password secured administration area and HTML templates engineered for maximum control of your page design and layout.

The integrated template system allows the layout and design of your image gallery to be easily customized. 4images supports multiple languages with an external language file that can be utilized by web masters that want their site translated into additional non-supported languages. Language packs can be updated by using regional third party add-ons, allowing your image site to be global in scope.

Other 4images features include robust RSS feeds, automatic thumbnail generation, search engine optimization through image tagging full user administration, upload function available to all users, showing EXIF data for all images with the data embedded, rating of photos, comment spam protection, hotlinking prevention and protection, a mass newsletter distribution function, fully integrated database backup function and customized e-cards that use uploaded photos in their design.