iThemes is a well-known WordPress theme and plugin developer, offering a range of products designed to enhance WordPress websites. Their offerings include themes, plugins for security, backups, and performance optimization, as well as tools for site customization. Popular products like iThemes Security, iThemes Sync, and BackupBuddy are widely used by WordPress site owners to improve functionality and protect websites. iThemes provides both free and premium versions of its products. Some third-party platforms may offer iThemes themes and plugins under the GPL (General Public License), but these versions typically exclude official support and updates from iThemes.