SharePlus is a mobile app that provides read and write access to Microsoft SharePoint servers from iOS, Android, and other mobile devices. It allows users to access SharePoint assets like calendars, contacts, lists, and document libraries both online and offline. SharePlus was one of the first iPad clients for SharePoint and has hundreds of thousands of downloads worldwide. It offers features like document editing and management, automatic syncing and offline editing, different list views, data encryption, and wifi sharing of local files.