Mopedi

click image for more screenshots

Mopedi is an offline wikipedia reader, available iPhones, iPods and iPads, and for Nokia Symbian touch screen phones.

Introductory video with some sample use cases with the Nokia version.

The separately downloadable wikipedia databases have full article text and include images and equations. Location information is also included, so phone GPS can be used to search for places of interest close by, and those places can be visualized on map.

Mopedi provides quick incremental searching, includes bookmarks and history, font setting, etc.

Mopedi is has complete wikipedia snapshots in

German
French
Simple English
Finnish
Swedish
Norwegian
English wikiquotes (en.wikiquote.org)
German wikiquotes
Finnish wikiquotes

For English there are distilled editions, from 1.1 million articles and 1.3 million images for the big version to over 106,000 articles and 452,000 images for the smaller version.

More languages and versions are being added. See here for details

iPhone, iPod and iPad

The full Mopedi version which features multiple database downloads is available from the App Store.

There are also standalone versions of Norwegian Wikipedia, Finnish Wikipedia and Simple English versions of Mopedi available at Apple's App Store. For these the full database is bundled with the application, so only one download is required and there is no separate installation step for the database. You cannot install additional databases for these versions.