Piwigo is photo gallery software for the web, built by an active community of users and developers. Extensions make Piwigo easily customizable. Piwigo is free and open source.
Many available extensions or plugins available. Custom programming may not be necessary.
User-friendly and easy to use, and offers easy management of content and data, with a minimal learning curve. No prommaning knowledge is necessary.
Has a larger active community. Support is always available for free or as a paid service. Excellent documentation available.