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Wikipedia editors have organized the vast content of the encyclopedia in several different "table of contents" and other forms for browsing. This page lists:
* Curated article collections - The most important articles on the most important topics
* Reference collections - Reference lists, timelines, glossaries, bibliographies, and discographies
* Special format collections - Portals, books, and spoken audio
* Complete collections of articles - For when you want to see *everything* Wikipedia has on a topic
* Collections of articles by quality or popularity

Curated article collections
Overview articles
Overview articles summarize in prose a broad topic like Biology, and also have illustrations and links to subtopics like Cell biology, biographies like Carl Linnaeus, and other related articles like Human Genome Project.
* Portal:Contents/Overviews lists overview articles from all areas of knowledge in a single page.

Outline pages
Outline pages have trees of article links in the classic outline format you may have learned in school. They show how important subtopics relate to each other, and can be useful as a more condensed, non-prose alternative to overview articles.
* Portal:Contents/Outlines is a comprehensive list of "Outline of \_\_" pages, organized by subject
* Outline of academic disciplines covers subjects studied in college or university, and links directly to prose overview articles

Third-party classification systems
Various third-party classification systems have been mapped to Wikipedia articles, which can be accessed from these pages:
* List of Dewey Decimal classes
* Library of Congress Classification
* Wikipedia:Outline of Roget's Thesaurus

Most important articles for editors
These lists are meant to identify articles which deserve editor attention because they are the most important for an encyclopedia to have, as determined by the community of participating editors. They may also be of interest to readers as an alternative to lists of overview articles.
* Vital articles level 1 - 10 most important articles
* Vital articles level 2 - 100 most important articles
* Vital articles level 3 - 1,000 most important articles
* Vital articles level 4 - 10,000 most important articles
* Category:Articles by importance - Browse articles by importance and topic via the Wikipedia category system

Reference collections
Wikipedia has several types of pages which provide content in a non-prose form, for reference purposes.

List pages
List pages enumerate items of a particular type, such as the List of sovereign states or List of South Africans. Wikipedia has "lists of lists" when there are too many items to fit on a single page, when the items can sorted in different ways, or as a way of navigating lists on a topic (for example Lists of countries and territories or Lists of people). There are several ways to find lists:
* Portal:Contents/Lists - A limited single-page collection of lists and lists of lists
* List of lists of lists - A broad single-page collection of lists of lists
* Category:Lists - Browse lists comprehensively via the multi-page Wikipedia category system

Timelines
Timelines list events chronologically, sometimes including links to articles with more detail. There are several ways to find timelines:
* List of timelines has a long single-page collection
* Category:Timelines has a comprehensive multi-page collection via the Wikipedia category system

Of particular interest may be:
* List of centuries
* List of decades
* List of historical anniversaries—e.g. events on January 1 of any year
* 2024—major events this year
* Portal:Current events—featured current events and related project activities
* Deaths in 2024—lists notable people who died this year
* Category:Graphical timelines—graphical timelines in the category and subcategories, arranged alphabetically

Glossaries
Glossaries are lists of terms with definitions. Wikipedia includes hundreds of alphabetical glossaries; they can be found two ways:
* Portal:Contents/Glossaries - A single-page list of glossaries
* Category:Glossaries - Browse glossaries comprehensively via the Wikipedia category system

Bibliographies
Bibliographies list sources on a given topic, for verification or further reading outside Wikipedia:
* Category:Bibliographies has a complete multi-page listing

Category:Discographies
Discographies catalog the sound recordings of individual artists or groups.
* Category:Discographies has a complete multi-page listing

Special format collections
Portals
Portals include featured articles, images, news, categories, excerpts of key articles, links to related portals, and to-do lists for editors. There are two ways to find portals:
* Portal:Contents/Portals - A single-page list of portals
* Category:Portals - Browse portals comprehensively via the Wikipedia category system

Wikipedia books
Wikipedia books are collections of Wikipedia articles that can be viewed, downloaded, or printed into a book. They provide a roadmap for a course of study in a particular subject.
* Category:Wikipedia books (community books)—an alphabetical list of the books
* Category:Wikipedia books—a list of the books, categorized by topic

Spoken articles
Growing collections of Wikipedia articles are starting to become available as spoken word recordings as well.
* Category:Spoken articles—an organized list of all spoken articles
* Wikipedia:Spoken articles—some general information about the spoken article technology

Complete collections of articles
Category system
Wikipedia's collection of category pages is a classified index system. It is automatically generated from category tags at the bottoms of articles and most other pages. Nearly all of the articles available so far on the website can be found through these subject indexes.
If you are simply looking to browse articles by topic, there are three top-level pages to choose from:
* Category:Main topic classifications—probably what you are looking for: Arts, History, Technology, etc.
* Category:Fundamental categories—organizes articles into "abstract" ontological categories in a way that every article can reasonably be expected to be classified within it
* Portal:Contents/Categories—a hand-crafted list of first- and second-level topic categories

For biographies, see Category:People categories by parameter.
Category:Contents is technically at the top of the category hierarchy, but contains many categories useful to editors but not readers. Special:Categories lists every category alphabetically.

Alphabetical lists of articles
Wikipedia's alphabetical article indexes
* Special:Allpages lists all of the current pages in Wikipedia.
* Portal:Contents/A–Z index provides an easy way to skip to a particular part of the alphabet in the list of all articles.
* Lists of alphabetical indexes
	+ Category:Indexes of topics—alphabetical list of topic indexes
	+ Portal:Contents/Indices—indexes sorted by topic area

Collections of articles by quality or popularity
Featured content
Featured content is the best Wikipedia has to offer, via vigorous peer review. Presented by type:
* Featured articlesTemplate:·Featured listsTemplate:· Featured picturesTemplate:· Featured portalsTemplate:· Featured topics

Most popular articles* Wikipedia:Top 5000 pages (of the last week)
* Wikitop—Top 30 most popular articles by categories, with user comments on traffic jumps

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