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Sites similar to openbsd.org

Openbsd alternatives & similar sites

OpenBSD — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Operating Systems →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
freebsd.org ↗	130 match 124 shared linkers · same topic	The FreeBSD Project	en	operating-systems	robotsllmsaihumans	emailphone	none
gentoo.org ↗	58 match 20 shared linkers · same topic	Welcome – Gentoo Linux	en	operating-systems phpBB	robotsllmsaihumans	emailphone	none
kernel.org ↗	57 match 32 shared linkers · same topic	The Linux Kernel Archives	en	operating-systems	robotsllmsaihumans	emailphone	none
debian.org ↗	54 match 73 shared linkers · same topic	Debian -- The Universal Operating System	en	operating-systems	robotsllmsaihumans	emailphone	none
opensuse.org ↗	54 match 18 shared linkers · same topic	openSUSE - Free Linux operating systems for desktops, servers and containers	en	operating-systems	robotsllmsaihumans	emailphone	none
ubuntu.com ↗	53 match 43 shared linkers · same topic	Enterprise Open Source and Linux \| Ubuntu	en	operating-systems	robotsllmsaihumans	emailphone	none
archlinux.org ↗	50 match 26 shared linkers · same topic	Arch Linux	en	operating-systems	robotsllmsaihumans	emailphone	none
linux.com ↗	46 match 18 shared linkers · same topic	Linux.com - News For Open Source Professionals	en	operating-systems WordPress WooCommerce	robotsllmsaihumans	emailphone	none
wireshark.org ↗	42 match 19 shared linkers · same topic	Wireshark • Go Deep	en	computer-networking	robotsllmsaihumans	emailphone	none
seclists.org ↗	41 match 18 shared linkers · same topic	SecLists.Org Security Mailing List Archive	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 1
nmap.org ↗	40 match 19 shared linkers · same topic	Nmap: the Network Mapper - Free Security Scanner	en	information-and-network-security	robotsllmsaihumans	emailphone	none
metasploit.com ↗	36 match 17 shared linkers · same topic	Metasploit \| Penetration Testing Software, Pen Testing Security \| Metasploit	en	information-and-network-security	robotsllmsaihumans	emailphone	none
kali.org ↗	36 match 20 shared linkers · same topic	Kali Linux \| Penetration Testing and Ethical Hacking Linux Distribution	en	information-and-network-security	robotsllmsaihumans	emailphone	none
libera.chat ↗	33 match 20 shared linkers · same topic	Libera Chat \| A next-generation IRC network for FOSS projects collaboration!	en	social-networking	robotsllmsaihumans	emailphone	none
tenable.com ↗	31 match 17 shared linkers · same topic	Vulnerability and exposure management \| Cloud and AI security \| Tenable®	en	information-and-network-security Drupal	robotsllmsaihumans	emailphone	none
brew.sh ↗	29 match 12 shared linkers · same topic	Homebrew: The Package Manager for Everywhere	en	software-and-applications	robotsllmsaihumans	emailphone	none
7-zip.org ↗	27 match 11 shared linkers · same topic	7-Zip		software-and-applications	robotsllmsaihumans	emailphone	none
perl.org ↗	27 match 11 shared linkers · same topic	The Perl Programming Language - www.perl.org	en	programming-languages	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.