Sites like Zotero

01 · Entity

About Zotero

Zotero zotero.org

Zotero | Your personal research assistant

Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.

Wikidata: reference management software

Top 10K · #5,077 English 5 technologies Crawled Nov 6, 2026

Visit Zotero

Summary by Claude

Free, open-source reference management software for collecting, organizing, annotating, and citing research sources, with browser capture, word processor plugins, cloud sync, and shared group libraries.

Who it’s for

Students, academics, and researchers

Business model

Paid storage subscriptions; nonprofit

• reference management software
• citation manager
• bibliography generator
• browser connector for saving articles
• Word and Google Docs citation plugin
• PDF annotation
• citation styles (CSL)
• shared group libraries
• cloud sync

02 · Embedding space

Competitor map

Each alternative by how close its vector is to Zotero’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.

1. 01
   doxygen.org Top 10K English

   Doxygen homepage

   Source code documentation and analysis tool

   • Bootstrap
   • Cloudflare
   • Cloudflare DNS
   • Cloudflare Web Analytics
   • Google AdSense

   0 say doxygen.org is a good alternative to Zotero 0 say doxygen.org isn’t a real alternative to Zotero

   Comment
   Very close cos 0.919
2. 02
   OSF osf.io Top 10K English

   OSF

   tools that make open science practice easier

   • Google Cloud DNS
   • Google Search Console
   • Mailchimp
   • Mailgun
   • Mailchimp Transactional

   0 say OSF is a good alternative to Zotero 0 say OSF isn’t a real alternative to Zotero

   Comment
   Very close cos 0.914
3. 03
   Drupal drupal.org Top 10K English

   Client Challenge

   free and open-source web content management system

   • Amazon SES
   • Atlassian
   • Fastly
   • GlobalSign
   • Google Search Console
   • Mailchimp

   0 say Drupal is a good alternative to Zotero 0 say Drupal isn’t a real alternative to Zotero

   Comment
   Very close cos 0.905
4. 04
   WordPress wordpress.org Top 100 English

   Blog Tool, Publishing Platform, and CMS | WordPress.org

   Open source software which you can use to easily create a beautiful website, blog, or app.

   • Google Fonts
   • Google Search Console
   • Google Tag Manager
   • nginx
   • PHP
   • WordPress

   0 say WordPress is a good alternative to Zotero 0 say WordPress isn’t a real alternative to Zotero

   Comment
   Very close cos 0.904
5. 05
   Zenodo zenodo.org Top 10K English

   Zenodo

   research data repository

   • Microsoft 365
   • cdnjs
   • Cloudflare DNS
   • Google Search Console
   • Matomo
   • nginx

   0 say Zenodo is a good alternative to Zotero 0 say Zenodo isn’t a real alternative to Zotero

   Comment
   Very close cos 0.901
6. 06
   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.

   • Bing Webmaster Tools
   • Google Search Console
   • Matomo
   • nginx

   0 say Open Library is a good alternative to Zotero 0 say Open Library isn’t a real alternative to Zotero

   Comment
   Very close cos 0.901
7. 07
   Semantic Scholar semanticscholar.org Top 10K English

   Semantic Scholar | AI-Powered Research Tool

   Semantic Scholar uses groundbreaking AI and engineering to understand the semantics of scientific literature to help Scholars discover relevant research.

   • Amazon CloudFront
   • Amazon Route 53
   • Google Analytics
   • Google Fonts
   • Google Search Console
   • Google Tag Manager

   0 say Semantic Scholar is a good alternative to Zotero 0 say Semantic Scholar isn’t a real alternative to Zotero

   Comment
   Very close cos 0.898
8. 08
   SourceForge sourceforge.net Top 1K English

   Compare B2B Software, Download, & Develop Open Source & Business Software - SourceForge

   SourceForge is the complete software discovery platform. SourceForge is the largest B2B software review and comparison site in the world, and features the largest business software directory, as well as free & fast open source software downloads and development.

   • Bing Webmaster Tools
   • Cloudflare
   • Google Analytics
   • Google Search Console
   • Mailchimp
   • Matomo

   0 say SourceForge is a good alternative to Zotero 0 say SourceForge isn’t a real alternative to Zotero

   Comment
   Very close cos 0.896
9. 09
   Bitwarden bitwarden.com Top 10K English

   Best Password Manager for Business, Enterprise & Personal | Bitwarden | Bitwarden

   Bitwarden is the trusted, open source password manager for individuals, teams, and enterprises. Securely store, share, and manage passwords, passkeys, and secrets. Free to start.

   • Amazon SES
   • Microsoft 365
   • Atlassian
   • Cloudflare DNS
   • Google Search Console
   • Google Tag Manager

   0 say Bitwarden is a good alternative to Zotero 0 say Bitwarden isn’t a real alternative to Zotero

   Comment
   Very close cos 0.896
10. 10
    iLovePDF ilovepdf.com Top 10K English

    iLovePDF | Online PDF tools for PDF lovers

    iLovePDF is an online service to work with PDF files completely free and easy to use. Merge PDF, split PDF, compress PDF, office to PDF, PDF to JPG and more!

    • Atlassian
    • Cloudflare
    • Cloudflare DNS
    • Google Analytics
    • Google Search Console
    • Google Workspace

    0 say iLovePDF is a good alternative to Zotero 0 say iLovePDF isn’t a real alternative to Zotero

    Comment
    Very close cos 0.897
11. 11
    LibreOffice libreoffice.org Top 10K English

    Free and private office suite, no forced AI — LibreOffice

    LibreOffice is a free office suite

    • Google Search Console
    • Hetzner DNS
    • nginx

    0 say LibreOffice is a good alternative to Zotero 0 say LibreOffice isn’t a real alternative to Zotero

    Comment
    Very close cos 0.896
12. 12
    medRxiv medrxiv.org Top 10K English

    medRxiv.org - the preprint server for Health Sciences

    medRxiv - the preprint server for biology, operated by openRxiv, a nonprofit organization dedicated to advancing scientific communication

    • Microsoft 365
    • Cloudflare
    • Cloudflare DNS
    • Drupal
    • Font Awesome
    • Google Analytics

    0 say medRxiv is a good alternative to Zotero 0 say medRxiv isn’t a real alternative to Zotero

    Comment
    Very close cos 0.895
13. 13
    Wikiquote wikiquote.org Top 10K English

    Wikiquote

    free multilingual online collection of quotes

    • Google Search Console

    0 say Wikiquote is a good alternative to Zotero 0 say Wikiquote isn’t a real alternative to Zotero

    Comment
    Very close cos 0.894
14. 14
    Bazaarvoice bazaarvoice.com Top 10K English

    Bazaarvoice | The UGC Platform for Authentic Shopper Experiences

    The leading UGC platform for authentic ratings, reviews, visual UGC, and review syndication that powers discovery, shopper trust, and higher ecommerce conversion.

    • Microsoft 365
    • Adobe
    • Adobe Fonts
    • Akamai Edge DNS
    • Apple Business
    • Atlassian

    0 say Bazaarvoice is a good alternative to Zotero 0 say Bazaarvoice isn’t a real alternative to Zotero

    Comment
    Close cos 0.893
15. 15
    Plausible Analytics plausible.io Top 10K English

    Plausible Analytics | Simple, privacy-friendly Google Analytics alternative

    Plausible is a lightweight and open-source Google Analytics alternative. Your website data is 100% yours and the privacy of your visitors is respected.

    • Alpine.js
    • bunny.net
    • Google Search Console

    0 say Plausible Analytics is a good alternative to Zotero 0 say Plausible Analytics isn’t a real alternative to Zotero

    Comment
    Close cos 0.892
16. 16
    Open Source googlesource.com Top 10K English

    Google Open Source

    Google <3 Open Source

    • Google Cloud
    • Google Fonts
    • Google Search Console

    0 say Open Source is a good alternative to Zotero 0 say Open Source isn’t a real alternative to Zotero

    Comment
    Close cos 0.891
17. 17
    ScienceDirect sciencedirect.com Top 1K English

    ScienceDirect

    journal

    • Microsoft 365
    • Cloudflare
    • Cloudflare DNS
    • GlobalSign

    0 say ScienceDirect is a good alternative to Zotero 0 say ScienceDirect isn’t a real alternative to Zotero

    Comment
    Close cos 0.892
18. 18
    arXiv arxiv.org Top 1K English

    arXiv.org e-Print archive

    online digital archive for electronic preprints of scientific papers

    • Apple Business
    • Fastly
    • Google Cloud
    • Google Cloud DNS
    • Google Workspace
    • Mailchimp

    0 say arXiv is a good alternative to Zotero 0 say arXiv isn’t a real alternative to Zotero

    Comment
    Close cos 0.891
19. 19
    Syncthing syncthing.net Top 10K English

    Syncthing

    open source continuous file synchronization software

    • Microsoft 365
    • Bootstrap
    • cdnjs
    • Fastly
    • Font Awesome
    • GitHub Pages

    0 say Syncthing is a good alternative to Zotero 0 say Syncthing isn’t a real alternative to Zotero

    Comment
    Close cos 0.888
20. 20
    HowStuffWorks howstuffworks.com Top 10K English

    American media company

    • Amazon CloudFront
    • Microsoft 365
    • Amazon Route 53
    • Atlassian
    • DocuSign
    • Google Search Console

    0 say HowStuffWorks is a good alternative to Zotero 0 say HowStuffWorks isn’t a real alternative to Zotero

    Comment
    Close cos 0.891

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

04 · Fingerprints

Technology

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