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Openpq alternatives & similar sites

Open PenQuin - Quantum Security Research Suite — 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 Information And Network Security →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
0xteles.com ↗	74 match 1 shared topics	Teles’s Blog \| Security Research	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
cerberion.net ↗	73 match 1 shared topics	Cerberion // Security Researcher	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
kav1n.com ↗	73 match 1 shared topics	Kav1n \| Security Researcher	en	information-and-network-security	robotsllmsaihumans	emailphone	none
nusasec.org ↗	73 match 1 shared topics	NusaSec Team - Security Research	en	information-and-network-security	robotsllmsaihumans	emailphone	none
0xsha.io ↗	73 match 1 shared topics	0xSHA · Security Research & Engineering	en	information-and-network-security	robotsllmsaihumans	emailphone	none
hrushikraj.tech ↗	72 match 1 shared topics	Hrushik Raj S \| Security Researcher	en	information-and-network-security	robotsllmsaihumans	emailphone	none
qsecops.org ↗	72 match 1 shared topics	QSecOps \| Quantum Security Operations	en	information-and-network-security	robotsllmsaihumans	emailphone	none
quantumsecurity2026.org ↗	72 match 1 shared topics	2026: Year of Quantum Security	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
0xweiss.com ↗	72 match 1 shared topics	0xWeiss - Security Researcher & Auditor	en	information-and-network-security	robotsllmsaihumans	emailphone	none
sermik.com ↗	72 match 1 shared topics	Security Research Host	en	information-and-network-security	robotsllmsaihumans	emailphone	none
0xahmadyousuf.com ↗	72 match 1 shared topics	Ahmad Yousuf - Security Researcher · Post-Quantum Cryptographer	en	information-and-network-security	robotsllmsaihumans	emailphone	none
pethuraj.com ↗	72 match 1 shared topics	Pethuraj M \| Security Researcher \| Penetration Tester	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cy4sec.co.uk ↗	71 match 1 shared topics	The Cyberfool — Independent Security Research	United Kingdom en	information-and-network-security	robots llmsaihumans	emailphone	none
0xfern.com ↗	71 match 1 shared topics	0xFern \| Independent Security Researcher	en	information-and-network-security	robotsllmsaihumans	emailphone	none
kellyeley.com ↗	71 match 1 shared topics	Kelly Eley – Cybersecurity researcher and writer	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
0xpolar.com ↗	71 match 1 shared topics	0xpolar - Cybersecurity Research & Offensive Security	en	information-and-network-security	robotsllmsaihumans	emailphone	none
0xsr.com ↗	71 match 1 shared topics	Suleman Rehman — Red Team Engineer & Security Researcher	en	information-and-network-security	robotsllmsaihumans	emailphone	none
chandlercamarena.com ↗	70 match 1 shared topics	Chandler Camarena: Hardware Security Researcher	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8

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.