Woffice is a feature rich, powerful Multipurpose Intranet and community WordPress theme.
Demo: https://themeforest.net/item/woffice-intranetextranet-wordpress-theme/11671924
Alliance is a modern, fresh & clean intranet / extranet WordPress Theme with the accents on performance and usability.
Demo: https://themeforest.net/item/alliance-intranet-extranet-wordpress-theme/12087162