Alternatives and competitors

Sites like Library of Congress

The 20 closest national library alternatives to Library of Congress, ranked by what they actually offer, and the 12 technologies behind it.

Looking for an alternative to Library of Congress? The closest matches are National Archives and Records Administration, National Library of Australia and United States Congress. We match sites by what they actually offer, from their homepages, Wikidata and a summary by Claude, in any language. Vote on each alternative and leave a short note to help the next person choose.

Neighbours: k = 20
Sites searched: 4,032
Vector: 384-d
Query: 19 ms

01 · Entity

About Library of Congress

Library of Congress loc.gov

Home | Library of Congress

The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.

Wikidata: (de facto) national library of the United States of America

Top 1K · #666 English 12 technologies Crawled Nov 6, 2026

Visit Library of Congress

Summary by Claude

Website of the U.S. national library, providing online access to digitized historic photos, maps, books, manuscripts and recordings, research help, exhibitions, events, visitor information, and links to Congress.gov and the U.S. Copyright Office.

Who it’s for: Researchers, students, educators and the public
Business model: Government funded

02 · Embedding space

Competitor map

Each alternative by how close its vector is to Library of Congress’s (x) and how much traffic it gets, how much of the stack it shares, or where it sits in the embedding space itself (y). Lines split each axis at the median. Hover for the numbers, click to jump to it in the list.

similarity × popularity

03 · Nearest neighbours

Alternatives to Library of Congress

Thumbs up if it’s a real alternative to Library of Congress, thumbs down if it isn’t.

Only in English

01
National Archives and Records Administration archives.gov Top 10K English

National Archives | Home

National Archives and Records Administration
Very close cos 0.939
02
National Library of Australia nla.gov.au Top 10K English

Home | National Library of Australia (NLA)

national reference library in Canberra, Australia
Very close cos 0.925
03
United States Congress congress.gov Top 10K English

bicameral legislature of the United States
Very close cos 0.926
04
United States Copyright Office copyright.gov Top 10K English

U.S. Copyright Office | U.S. Copyright Office

Copyright Office Homepage
Very close cos 0.925
05
Internet Archive archive.org Top 1K English

Internet Archive: Digital Library of Free & Borrowable Texts, Movies, Music & Wayback Machine

U.S. non-profit organization and digital archive
Very close cos 0.916
06
GovInfo govinfo.gov Top 10K English

GovInfo | U.S. Government Publishing Office

U.S. Government Publishing Office
Very close cos 0.913
07
UK National Archives nationalarchives.gov.uk Top 10K English

Welcome to The National Archives

Explore 1,000 years of history with the official national archive of the UK Government.
Very close cos 0.911
08
White House whitehouse.gov Top 10K English

The White House

President Donald J. Trump and Vice President JD Vance are committed to lowering costs for all Americans, securing our borders, unleashing American energy dominance, restoring peace through strength, and making all Americans safe and secure once again.
Very close cos 0.908
09
BnF bnf.fr Top 10K English

Accueil | BnF – Site institutionnel

.
Very close cos 0.904
10
Smithsonian Institution si.edu Top 10K English

Smithsonian request verification

group of museums and research centers administered by the United States government
Very close cos 0.905
11
National Park Service nps.gov Top 10K English

NPS.gov Homepage (U.S. National Park Service)

The National Park Service cares for special places saved by the American people so that all may experience our heritage.
Very close cos 0.903
12
United States House of Representatives house.gov Top 10K English

Homepage | house.gov

lower house of the United States Congress
Very close cos 0.905
13
Open Library openlibrary.org Top 10K English

Welcome to Open Library | Open Library

Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for free.
Very close cos 0.901
14
JSTOR jstor.org Top 10K English

Client Challenge

distributor of eBooks and other digital media
Very close cos 0.901
15
United States Department of State state.gov Top 1K English

Technical Difficulties

executive department of the U.S. federal government
Very close cos 0.901
16
United States federal courts uscourts.gov Top 10K English

United States Courts

third constitutional branch of government
Very close cos 0.900
17
usa.gov Top 10K English

Making government services easier to find | USAGov

Find government benefits, services, agencies, and information at USA.gov. Contact elected officials. Learn about passports, Social Security, taxes, and more.
Very close cos 0.900
18
Project Gutenberg gutenberg.org Top 10K English

Free eBooks | Project Gutenberg

Project Gutenberg is a library of over 75,000 free eBooks. Choose from ebook formats or read online. No fees, no registration, no ads.
Very close cos 0.898
19
United States Army army.mil Top 10K English

The Official Home Page of the United States Army

The latest news, images, videos, career information, and links from the U.S. Army
Very close cos 0.898
20
United States Census Bureau census.gov Top 10K English

Census.gov | U.S. Census Bureau Homepage

The Census Bureau's mission is to serve as the nation's leading provider of quality data about its people and economy.
Very close cos 0.895

Ranked by score: the cosine similarity of each site’s vector to loc.gov’s, less a small penalty for generic sites that are close to everything. Highlighted technologies are ones Library of Congress uses too. Votes and comments come from visitors and don’t change the ranking.

04 · Fingerprints

Technology

What Library of Congress is built with, and what its closest competitors use, from its homepage’s code and its DNS records.

Built with

JavaScript libraries: jQuery asset https://www.loc.gov/static/ui2/dist/js/jquery-1.8.2.js
CSS & UI: Font Awesome asset https://www.loc.gov/static/ui2/dist/fontawesome/css/all.css
Tag managers: Adobe Experience Platform Tags asset https://assets.adobedtm.com/dac62e20b491e735c6b56e64c39134d8ee93f9cf/satelliteLib-6b47f83…
CDN: Cloudflare header cf-ray: a562fb162c2783bd-HAM
Email hosting: Microsoft 365 TXT MS=ms90737861
DNS hosting: Cloudflare DNS NS kevin.ns.cloudflare.com
SaaS tools (verified in DNS): Adobe TXT adobe-idp-site-verification=02f02861-90f5-4cf5-9922-c67c80a7bf26
Atlassian TXT atlassian-domain-verification=nWInaz9qwixZxg4Ef5K7jmsSKDAlta15azD9kOF…
Bing Webmaster Tools meta msvalidate.01: 5C89FB9D99590AB2F55BD95C3A59BD81
Google Search Console TXT google-site-verification=60lAEjrt1Mhjzxp92lROrlGsYFR9alVBZVncUMaus7Q
OpenAI TXT openai-domain-verification=dv-30BwSHGyfCP4Av8FZs9IAyOJ
Webex TXT webexdomainverification.NQCL=b1bef083-e011-4dcf-b1f7-42204b82128e

Stack changes

No changes yet. Each new crawl is compared with the last one, and what Library of Congress adds or drops shows up here.

What competitors use

Across the 20 closest sites.