Sites like GNU

01 · Entity

About GNU

GNU gnu.org

The GNU Operating System and the Free Software Movement

Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.

Wikidata: Unix-like operating system

Top 1K · #354 English 1 technologies Crawled Nov 6, 2026

Visit GNU

Summary by Claude

Official site of the GNU Project, which develops the GNU free Unix-like operating system and its software packages, and explains free software philosophy and licensing such as the GPL.

Who it’s for

Free software users, developers and advocates

Business model

Donations via the Free Software Foundation

• free software project
• GNU operating system
• GNU General Public License
• free software philosophy
• GNU packages
• GNU/Linux distributions
• software licensing
• free software movement

02 · Embedding space

Competitor map

Each alternative by how close its vector is to GNU’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
   FreeBSD freebsd.org Top 10K English

   The FreeBSD Project

   free Unix-like operating system

   • Font Awesome
   • Microsoft 365
   • Plausible

   0 say FreeBSD is a good alternative to GNU 0 say FreeBSD isn’t a real alternative to GNU

   Comment
   Very close cos 0.918
2. 02
   GNOME gnome.org Top 10K

   desktop environment and graphical user interface

   • Google Search Console
   • Microsoft 365

   0 say GNOME is a good alternative to GNU 0 say GNOME isn’t a real alternative to GNU

   Comment
   Very close cos 0.913
3. 03
   Linux kernel kernel.org Top 10K English

   The Linux Kernel Archives

   Unix-like operating system kernel, basis for all Linux operating systems

   • Google Search Console
   • nginx

   0 say Linux kernel is a good alternative to GNU 0 say Linux kernel isn’t a real alternative to GNU

   Comment
   Very close cos 0.910
4. 04
   Debian debian.org Top 1K English

   Debian -- The Universal Operating System

   Debian is an operating system and a distribution of Free Software. It is maintained and updated through the work of many users who volunteer their time and effort.

   • Apache HTTP Server
   • Google Search Console

   0 say Debian is a good alternative to GNU 0 say Debian isn’t a real alternative to GNU

   Comment
   Very close cos 0.900
5. 05
   Arch Linux archlinux.org Top 10K English

   Arch Linux

   Linux distribution

   • Google Search Console
   • Hetzner DNS
   • nginx

   0 say Arch Linux is a good alternative to GNU 0 say Arch Linux isn’t a real alternative to GNU

   Comment
   Very close cos 0.899
6. 06
   Go go.dev Top 10K English

   The Go Programming Language

   Go is an open source programming language that makes it simple to build secure, scalable systems.

   • Google Cloud
   • Google Cloud DNS
   • Google Fonts
   • Google Search Console
   • Google Tag Manager
   • Google Workspace

   0 say Go is a good alternative to GNU 0 say Go isn’t a real alternative to GNU

   Comment
   Very close cos 0.898
7. 07
   Lothar lothar.com Top 10K

   Lothar of the Webspace

   • Google Search Console

   0 say Lothar is a good alternative to GNU 0 say Lothar isn’t a real alternative to GNU

   Comment
   Very close cos 0.894
8. 08
   git-scm.com Top 10K English

   Git

   distributed version control system

   • Cloudflare
   • Cloudflare DNS
   • Fastly
   • jQuery

   0 say git-scm.com is a good alternative to GNU 0 say git-scm.com isn’t a real alternative to GNU

   Comment
   Close cos 0.893
9. 09
   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 GNU 0 say doxygen.org isn’t a real alternative to GNU

   Comment
   Close cos 0.892
10. 10
    Gentoo Linux gentoo.org Top 10K English

    Welcome – Gentoo Linux

    The website of Gentoo, a flexible Linux distribution.

    • Bootstrap
    • Fastly
    • Google Search Console
    • jQuery
    • nginx

    0 say Gentoo Linux is a good alternative to GNU 0 say Gentoo Linux isn’t a real alternative to GNU

    Comment
    Close cos 0.891
11. 11
    nginx nginx.org Top 100

    nginx

    open source web server and a reverse proxy server

    • Google Search Console
    • nginx

    0 say nginx is a good alternative to GNU 0 say nginx isn’t a real alternative to GNU

    Comment
    Close cos 0.889
12. 12
    freedesktop.org Top 10K English

    Checking you are not a bot

    open-source desktop environment software project

    • Apache HTTP Server
    • Google Search Console

    0 say freedesktop.org is a good alternative to GNU 0 say freedesktop.org isn’t a real alternative to GNU

    Comment
    Close cos 0.888
13. 13
    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 GNU 0 say Drupal isn’t a real alternative to GNU

    Comment
    Close cos 0.890
14. 14
    Cygwin cygwin.com Top 10K English

    Cygwin

    Unix subsystem for Windows machines

    • nginx
    • NS1

    0 say Cygwin is a good alternative to GNU 0 say Cygwin isn’t a real alternative to GNU

    Comment
    Close cos 0.887
15. 15
    libpng.org Top 10K

    libpng.org: top level

    • nginx

    0 say libpng.org is a good alternative to GNU 0 say libpng.org isn’t a real alternative to GNU

    Comment
    Close cos 0.886
16. 16
    web.dev Top 10K English

    web.dev

    Guidance to build modern web experiences that work on any browser.

    • Google Cloud
    • Google Fonts
    • Google Search Console

    0 say web.dev is a good alternative to GNU 0 say web.dev isn’t a real alternative to GNU

    Comment
    Close cos 0.888
17. 17
    Moodle moodle.org Top 10K

    Moodle challenge

    e-learning platform

    • Amazon SES
    • Cloudflare
    • Cloudflare DNS
    • Google Search Console
    • Google Workspace
    • Mailchimp Transactional

    0 say Moodle is a good alternative to GNU 0 say Moodle isn’t a real alternative to GNU

    Comment
    Close cos 0.888
18. 18
    Python python.org Top 1K English

    Welcome to Python.org

    The official home of the Python Programming Language

    • Fastly
    • Font Awesome
    • GlobalSign
    • Google Search Console
    • Google Workspace
    • jQuery

    0 say Python is a good alternative to GNU 0 say Python isn’t a real alternative to GNU

    Comment
    Close cos 0.888
19. 19
    Wikimedia movement wikimedia.org Top 1K English

    Wikimedia Error

    global social movement for free educational knowledge

    • Google Search Console
    • Google Workspace
    • Microsoft 365
    • Miro

    0 say Wikimedia movement is a good alternative to GNU 0 say Wikimedia movement isn’t a real alternative to GNU

    Comment
    Close cos 0.889
20. 20
    phpBB phpbb.com Top 10K English

    open-source Internet forum package written in PHP

    • Cloudflare
    • Cloudflare DNS

    0 say phpBB is a good alternative to GNU 0 say phpBB isn’t a real alternative to GNU

    Comment
    Close cos 0.886

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

04 · Fingerprints

Technology

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