The Best Online Encyclopedias in 2026
We researched online encyclopedias from their official websites, including pricing pages, plan tables and product documentation. Rankings focus on subject coverage, the core reference experience, value for money and verified features.
Our top picks
-
Top ranked
Wikipedia#1 of 329.4/10A broad, free reference resource with multilingual search and transparent article histories.
Free plan
-
Runner-up
Encyclopaedia Britannica#2 of 329.2/10A fact-checked, multimedia reference service with strong classroom and accessibility tools.
-
Top-ranked free plan
Store norske leksikon#3 of 329.0/10A strong free reference for Norwegian-language research, learning and everyday questions.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 32 tools, best first
-
Best forFree, broad everyday research
A broad, free reference resource with multilingual search and transparent article histories.
- Mobile apps
- Educator resources
- Citation tools
9.4/10★★★★★Visit Wikipedia -
Best forFact-checked institutional reference
A fact-checked, multimedia reference service with strong classroom and accessibility tools.
- Mobile apps
- Institutional access
- Educator resources
9.2/10★★★★★Visit Britannica -
Best forNorwegian-language reference users
A strong free reference for Norwegian-language research, learning and everyday questions.
- Mobile apps
- Citation tools
9.0/10★★★★☆Visit site -
Best forFree source-based reference browsing
A free reference browser with citations, multimedia summaries, and related articles.
- Institutional access
- Citation tools
8.8/10★★★★☆Try Encyclopedia.com -
Best forItalian reference and classroom content
A free Italian reference hub that adds language, culture, and classroom tools.
- Mobile apps
- Institutional access
- Educator resources
8.6/10★★★★☆Visit Treccani -
Best forProfessional reference fact-checking
A broad Oxford reference library for professional fact-checking and research.
- Institutional access
8.4/10★★★★☆Try Oxford Reference -
Best forFree collaborative Chinese-language reference
A free web encyclopedia for finding and contributing Chinese-language reference information.
8.3/10★★★★☆Visit Baidu Baike -
Best forSchools needing structured research tools
Structured, accessible research content for PreK–12 schools and educators.
- Institutional access
- Educator resources
- Citation tools
8.2/10★★★★☆Explore Britannica -
Best forFree French-language general reference
A broad, free French reference service for everyday research and learning.
8.2/10★★★★☆Visit Larousse -
Best forPaid editorially reviewed reference
A paid reference service built around reviewed articles, citations, and learning resources.
8.1/10★★★★☆Visit Brockhaus -
Best forSwedish families and schools
A broad Swedish reference service with family plans, teaching tools, citations and AI support.
- Institutional access
- Educator resources
- Citation tools
8.0/10★★★★☆Visit site -
Best forKorean reference with API access
A free, expert-authored Korean reference with citations, media, playback, and API access.
7.8/10★★★★☆Visit Encyclopedia -
Best forChildren needing safe multimedia reference
A multimedia, fact-checked reference service for children, students, and families.
7.8/10★★★★☆Try Britannica Kids -
Best forLibraries needing federated reference search
Credo Reference combines multi-publisher content with guided discovery and library search.
- Institutional access
- Educator resources
- Citation tools
7.8/10★★★★☆Try Credo Reference -
Best forNew Zealand history and culture
A free, multimedia reference for researching New Zealand history, culture and society.
- Citation tools
7.7/10★★★★☆Visit Te Ara -
Best forCatalan reference and education
A free Catalan reference portal with broad collections and citation guidance.
7.6/10★★★★☆Try Enciclopèdia.cat -
Best forChildren reading German reference content
A focused, child-friendly reference site for German-speaking children and school students.
- Educator resources
- Citation tools
7.5/10★★★★☆Visit Klexikon -
Best forArkansas-focused education and research
A focused, free reference for researching Arkansas history, culture, and geography.
- Educator resources
- Citation tools
7.4/10★★★★☆Visit site -
Best forAlabama-focused reference and education
A focused Alabama reference with multimedia articles, indexes, locations, and citation guidance.
- Citation tools
7.3/10★★★★☆Visit site -
Best forFree general reference and research tools
A broad, free reference hub for students, teachers, parents, and general readers.
- Educator resources
- Citation tools
7.1/10★★★★☆Visit Infoplease -
Best forSchools wanting broad multimedia research
A broad multimedia research suite with strong classroom tools and education integrations.
- Mobile apps
- Institutional access
- Educator resources
7.1/10★★★★☆Visit World Book -
Best forFolk-culture research across languages
A focused multilingual reference with strong browsing, media and citation support.
7.1/10★★★★☆Visit site -
Best forWikipedia readers wanting a customized browsing layer
A feature-rich Wikipedia reading layer, not a standalone encyclopedia.
7.0/10★★★★☆Visit Wikiwand -
Best forReaders preferring real-name collaboration
A focused, citable encyclopedia for readers who value accountable contributors.
- Citation tools
6.9/10★★★☆☆Visit Citizendium -
Best forResearching quotations and attributions
A free multilingual quotation reference with search, browsing, and citation tools.
- Citation tools
6.8/10★★★☆☆Visit Wikiquote -
Best forLibraries and families needing guided reference
Guided, accessible reference content for libraries, schools, colleges, and families.
- Institutional access
6.7/10★★★☆☆Visit Britannica -
Best forCanadian history and culture research
A strong free resource for researching Canadian history, culture, people and places.
- Educator resources
- Citation tools
6.3/10★★★☆☆Visit site -
Best forFrench-language institutional research
A specialist-checked French encyclopedia with multimedia and education tools.
- Institutional access
- Educator resources
- Citation tools
6.0/10★★★☆☆Visit Universalis -
Best forLarge Danish-language reference coverage
A broad, free Danish reference platform with search, multimedia, citations and quizzes.
- Citation tools
5.6/10★★★☆☆Visit Lex -
Best forChildren using simplified encyclopedia content
A free, editable encyclopedia with simplified articles and multimedia content for children.
- Citation tools
5.3/10★★★☆☆Visit Vikidia -
Best forVirginia history research
A focused, citation-ready reference for researching Virginia’s history and culture.
- Citation tools
5.2/10★★★☆☆Visit site -
Best forFree editorially selected reference
A free, editorially supervised web encyclopedia for general reference and study.
- Citation tools
5.0/10★★☆☆☆Visit site
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Citation tools | Content formats | Update frequency | Score |
|---|---|---|---|---|---|---|---|
| 1 | Wikipedia | Yes | Free | Yes | Multimedia | Continuous | 9.4 |
| 2 | Encyclopaedia Britannica | Yes | Multimedia | 9.2 | |||
| 3 | Store norske leksikon | Yes | Free | Yes | Text and images | Daily | 9.0 |
| 4 | Encyclopedia.com | Yes | Free | Yes | Multimedia | Continuous | 8.8 |
| 5 | Treccani | Yes | Text | Not stated | 8.6 | ||
| 6 | Oxford Reference | Text and images | Not stated | 8.4 | |||
| 7 | Baidu Baike | Yes | Free | Text and images | Not stated | 8.3 | |
| 8 | Britannica School | No | Yes | Multimedia and interactive | Continuous | 8.2 | |
| 9 | Encyclopédie Larousse | Yes | Free | Text and images | Not stated | 8.2 | |
| 10 | Brockhaus | Not stated | 8.1 | ||||
| 11 | Nationalencyklopedin | No | Yes | Text and images | Continuous | 8.0 | |
| 12 | Encyclopedia of Korean Culture | Yes | Free | Text and images | Not stated | 7.8 | |
| 13 | Britannica Kids | No | Multimedia | Not stated | 7.8 | ||
| 14 | Credo Reference | No | Yes | Multimedia | Not stated | 7.8 | |
| 15 | Te Ara – The Encyclopedia of New Zealand | Yes | Free | Yes | Multimedia | Not stated | 7.7 |
| 16 | Enciclopèdia.cat | Yes | Free | Text and images | Not stated | 7.6 | |
| 17 | Klexikon | Yes | Free | Yes | Text and images | Not stated | 7.5 |
| 18 | Encyclopedia of Arkansas | Yes | Free | Yes | Multimedia | Not stated | 7.4 |
| 19 | Encyclopedia of Alabama | Yes | Free | Yes | Multimedia | Not stated | 7.3 |
| 20 | Infoplease | Yes | Free | Yes | Multimedia and interactive | Not stated | 7.1 |
| 21 | World Book Online | No | Yes | Multimedia and interactive | Continuous | 7.1 | |
| 22 | Encyclopedia of Korean Folk Culture | Yes | Free | Text and images | Not stated | 7.1 | |
| 23 | Wikiwand | Yes | Text and images | 7.0 | |||
| 24 | Citizendium | Yes | Free | Yes | Text and images | Not stated | 6.9 |
| 25 | Wikiquote | Yes | Free | Yes | Text and images | Not stated | 6.8 |
| 26 | Britannica Library | Multimedia | Not stated | 6.7 | |||
| 27 | The Canadian Encyclopedia | Yes | Free | Yes | Multimedia and interactive | Continuous | 6.3 |
| 28 | Encyclopaedia Universalis | No | Yes | Multimedia and interactive | Not stated | 6.0 | |
| 29 | Lex – Danmarks Nationalleksikon | Yes | Free | Yes | Multimedia and interactive | Continuous | 5.6 |
| 30 | Vikidia | Yes | Free | Yes | Multimedia | Not stated | 5.3 |
| 31 | Encyclopedia Virginia | Yes | Free | Yes | Multimedia and interactive | Not stated | 5.2 |
| 32 | New World Encyclopedia | Yes | Free | Yes | Text and images | Not stated | 5.0 |
Head-to-head All 28 comparisons →
- Wikipedia vs Encyclopaedia Britannica
- Wikipedia vs Store norske leksikon
- Wikipedia vs Encyclopedia.com
- Wikipedia vs Treccani
- Wikipedia vs Oxford Reference
- Wikipedia vs Baidu Baike
- Wikipedia vs Britannica School
- Encyclopaedia Britannica vs Store norske leksikon
- Encyclopaedia Britannica vs Encyclopedia.com
Explore other topics All topics →
- AI Tools 303 directories · 8,269 tools ranked AI Writing Tools · AI Video Generators · Text-to-Speech Software
- Web Hosting & Domains 275 directories · 6,107 tools ranked Shared Web Hosting · Managed Cloud Hosting · Dedicated Server Hosting
- Productivity 157 directories · 4,948 tools ranked Note-Taking Apps · Calendar Apps · Project Management Software
- Marketing 135 directories · 3,977 tools ranked SEO Tools · Influencer Marketing Platforms · Email Marketing Software
- Sales & CRM 152 directories · 4,161 tools ranked Real Estate CRM Software · CRM Software · Proposal Software
- Customer Service 55 directories · 1,547 tools ranked Chatbot Builders · Knowledge Base Software · Call Center Software
How we rank online encyclopedias
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update