Have your own copy of Wikipedia
This post is for all the students, educators and knowledge hungry people who extensively rely on Wikipedia for information. Downloading individual pages is a very common practise. For those who do not prefer to spend money on encyclopaedias, especially the online ones, this post should be a helpful hand to them.
This project provides only the textual data, which accounts to a whopping 9.06 GB compressed file (42 GB uncompressed). The biggest +1 is the offline reading ability.
Users can go with Torrent files and use clients like BitTorrent to download the huge files or use the data dumps provided by Wikipedia.
Besides English, the dumps are available in languages: Arabic, Dutch, French, German, Italian, Polish, Portuguese, Russian, Spanish and Ukrainian.
You can refer to the project here to know more about installation procedure.
After downloading the data dumps, you can use following soft wares to read the Wikipedia data.
XOWA: XOWA is an open-source desktop application that can read and edit Wikipedia offline. It is currently in the beta stage of development, but is functional. It is available for download
Offline Wikipedia Reader: for Mac OS X, GNU/Linux, FreeBSD/OpenBSD/NetBSD, and other Unices
The offline-wikipedia project provides a very effective way to get an offline version of wikipedia. It uses entirely free software. Packages are available for Ubuntu and soon for other Linux distributions.
WikiTaxi: WikiTaxi is an offline-reader for wikis in MediaWiki format. It enables users to search and browse popular wikis like Wikipedia, Wikiquote, or WikiNews, without being connected to the Internet. WikiTaxi works well with different languages like English, German, Turkish, and others but has a problem with right-to-left language scripts. Doesn’t allow to display images though.
WikiFilter: WikiFilter is a program which allows you to browse over 100 dump files without visiting a Wiki site.
For installation instructions refer this.
Thus, you have a fully functional offline Wikipedia database which you can store in your smartphone or a USB Drive. But be sure to read the instructions and caution notes before commencing the download.