Encyclopedias: best apps and software
Encyclopedias and knowledge bases provide reference articles on people, places, and topics, maintained by editors, volunteers, or AI.

Wikipedia
The Wikipedia app allows users to browse, read, and contribute to a vast encyclopedia across various subjects and languages.

IMDb
The IMDb app provides extensive information on movies, TV shows, and celebrities, including ratings, reviews, and production details.

Grokipedia
Grokipedia is an AI-powered online encyclopedia offering searchable, citation-backed articles in clear headings, available in JSON and designed for concise, neutral reference.

Python Wiki
The Python Wiki is a user-editable resource offering documentation, tutorials, and community content focused on the Python programming language.

Fandom
Fandom is a wiki hosting platform for entertainment topics, allowing users to create, share, and discuss content about movies, TV shows, and video games.

Encyclopædia Britannica
The Encyclopædia Britannica app offers reliable information across various subjects with articles, a chatbot for queries, and educational resources like quizzes.

Emojipedia
Emojipedia is an emoji search engine that provides detailed information about emojis, including meanings, usage, and design variations across platforms.

Stanford Encyclopedia of Philosophy
The Stanford Encyclopedia of Philosophy app provides access to nearly 1800 expert-reviewed entries on philosophical topics, updated regularly and with citation information.

Simple English Wikipedia
The Simple English Wikipedia app provides access to articles in simple English, aiding learners in exploring various topics easily and supporting offline reading.

ArchWiki
ArchWiki is a documentation app for Arch Linux users, offering guides on installation, configuration, and troubleshooting for various Linux topics.

OpenStreetMap Wiki
OpenStreetMap Wiki is a resource for documenting and sharing geographic data, enabling contributions and access to mapping information for various uses.

Ubuntu Wiki
Ubuntu Wiki is an online resource providing documentation, guides, and community support for users and developers of the Ubuntu operating system.

Minecraft Wiki
Minecraft Wiki is an app providing detailed information about Minecraft, including gameplay mechanics, crafting recipes, and guides for players.

Debian Wiki
Debian Wiki is a collaborative resource providing detailed documentation and support for users and developers of the Debian operating system.

Vocaloid Database
VocaDB is a collaborative online database for Vocaloid, UTAU, and singing synthesizers, providing information on artists, songs, and music videos.

World History Encyclopedia
The World History Encyclopedia app provides access to fact-checked historical articles, images, and resources, serving as a reference tool for learners and researchers.

AllMusic
AllMusic app offers detailed information about artists, albums, and genres, including reviews and recommendations for discovering new music.

The Apple Wiki
The Apple Wiki app is an unofficial resource that compiles information about Apple devices, software, and innovations for easy user access.

Gentoo Wiki
Gentoo Wiki is an extensive documentation resource for Gentoo Linux, offering guides on installation, configuration, and system optimization for users.

The World Factbook
The World Factbook app provides comprehensive almanac-style information about global countries, including geography, economy, and demographics for research and reference.

Chromeball Wiki
Chromeball Wiki is a community platform for r/Chromeball fans to explore and create articles about characters inspired by the Polandball series.

Ballotpedia
Ballotpedia is an app providing detailed information on elections, candidates, and voting methods, promoting civic engagement and understanding of the electoral process.

OrthodoxWiki
OrthodoxWiki is an editable encyclopedia offering comprehensive information about Orthodox Christianity, including its history, doctrine, and practices.

Worldatlas.com
Worldatlas.com is an online platform providing geographic information, maps, and educational resources about the earth's regions, countries, and cultures.

Polcompball Wiki
The Polcompball Wiki app provides information on various political ideologies and concepts through engaging visuals and detailed explanations.

Marvel Database
The Marvel Database is an online resource that catalogues Marvel Comics characters, comics, storylines, and media, allowing users to explore and contribute information.

抖音百科
Douyin Encyclopedia is an informational app that provides comprehensive knowledge about the Douyin platform, its features, and its impact on Chinese social media.

Symbols.com
Symbols.com is an encyclopedia app for exploring various symbols, signs, flags, and glyphs by categories, alphabetically, or through keyword searches.

百度百科
Baidu Baike is a Chinese-language online encyclopedia that offers comprehensive information across various subjects, allowing user contributions and collaborative editing.

Computer Science Wiki
The Computer Science Wiki is an online resource for learning IB Computer Science topics and programming courses, offering structured information for all skill levels.

Metapedia
Metapedia is a collaborative online encyclopedia focused on culture, art, science, philosophy, and politics, allowing users to create and edit articles.

Polcompball Anarchy Wiki
The Polcompball Anarchy Wiki app offers a platform to explore and create articles on various political ideologies in a fun, informal manner.

Bulbapedia
Bulbapedia is a user-contributed encyclopedia on Pokémon, providing detailed information on species, games, media, and gameplay mechanics.

Killed By Google
Killed By Google is an open-source app that catalogs discontinued Google services, products, and apps, providing insights into their historical context and reasons for termination.

SCP Wiki
The SCP Wiki app provides access to user-generated stories and articles about anomalous objects, entities, and phenomena related to the fictional SCP Foundation.

MSD Veterinary Manual
Provides authoritative veterinary reference on animal diseases, diagnostics, treatment, preventive care, husbandry, and herd management for veterinarians and animal health professionals.

Hacks Guide Wiki
Hacks Guide Wiki is a resource providing information on homebrew and custom firmware for Nintendo consoles like the 3DS, Wii U, Switch, and Wii.

Terraria Wiki
Terraria Wiki is a comprehensive reference app for the game Terraria, providing information on gameplay mechanics, items, enemies, and world generation.

AniDB
AniDB is a community platform and database for anime that offers information on titles, characters, and creators, allowing users to track, catalog, and discuss anime.

Wikiparfum
Wikiparfum is an encyclopedia for perfume lovers, offering a searchable database of fragrances, their ingredients, and user insights to enhance fragrance knowledge.

Ark Wiki
The Ark Wiki app is a resource for ARK: Survival Evolved, providing details on gameplay, creatures, crafting, maps, and strategies to aid players.

Biographies.net
Biographies.net is an app that provides detailed biographies of various individuals, offering facts about their lives, professions, and achievements.

Date Everything Wiki
The Date Everything Wiki app is a collaborative platform for documenting and sharing dates related to historical events, anniversaries, and more.

HowStuffWorks
The HowStuffWorks app offers educational articles, videos, and podcasts explaining various topics like science, technology, and culture for easy understanding.

Farming Simulator Wiki
The Farming Simulator Wiki app provides detailed information on Farming Simulator games, including guides on maps, vehicles, equipment, and gameplay mechanics.

Got Questions?
A Bible Q&A app with over 9,300 articles, searchable by topic or keyword, with bookmarks, offline updates, and question submission.

Serebii.net
The Serebii.net app provides up-to-date news and databases for all Pokémon games, TCG sets, and the TV show, serving as a comprehensive resource for fans.

Scratch Wiki
Scratch Wiki is a collaborative resource that offers information and tutorials on Scratch programming, its features, and community projects for users of all skill levels.

Wikipedia Librery
The Wikipedia Library app provides access to over 100 subscription-only databases in 30 languages for Wikipedia editors and contributors.

Philosophyball Wiki
Philosophyball Wiki is a community-driven app providing accessible information on various philosophical concepts and movements through a collaborative wiki format.

Kiwix
Kiwix provides offline access to Wikipedia and other educational content, allowing users to download and store information for learning without internet connectivity.

Yugipedia
Yugipedia is a free app that provides a comprehensive database of the Yu-Gi-Oh! franchise, including cards, episodes, and character information.

Birds of the World
Delivers searchable species accounts with taxonomy, descriptions, range maps, photos, audio, observations and references, combining scholarly sources, eBird data and Macaulay Library media.

Wikispecies
Wikispecies is a collaborative online database cataloging all species, providing taxonomic and classification information for scientists and researchers.

Lost Media Wiki
Lost Media Wiki is an app that documents and preserves information about lost media, allowing users to contribute to a collaborative database of inaccessible content.

The Backrooms Wiki
The Backrooms Wiki app documents the levels, entities, and lore of The Backrooms, offering a structured resource for fans and creators of this fictional universe.

WikiExplore
WikiExplore lets users discover Wikipedia articles through an interactive map using geolocation, providing previews linked to related resources.

Treccani
Provides direct access to Treccani’s Italian encyclopedia and vocabulary, magazines, news, cultural events, courses, catalog and collections, with advanced search and a grammar/linguistic reference.

PCGamingWiki
PCGamingWiki lists fixes and workarounds for PC games, providing solutions for gameplay issues, performance optimization, and configuration tips.

コトバンク
コトバンク is an online dictionary and knowledge platform that provides comprehensive definitions and information on Japanese words, culture, and various subjects.