XOWA is a desktop application that can read and edit English Wikipedia offline. It displays articles in an HTML browser, and can download images on demand. It can also be used for Wiktionary, Wikisource, Wikiquote, and the non-English counterparts.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.