Envira Gallery is a popular WordPress plugin that helps users create beautiful, responsive image galleries. It offers drag-and-drop functionality, allowing easy creation and customization of galleries for websites. Features include lightbox support, image optimization, and various gallery display options. The plugin is available in both free and premium versions, with the Pro version offering advanced features like albums, social media integration, and more. Some third-party sources provide Envira Gallery under GPL (General Public License), allowing redistribution but without official support or updates from the original developers.