similar sites

Browse

Reports

AI ReportState of AI on the open web — who blocks ChatGPT & more Security ReportWordPress vulnerabilities & patch hygiene across the web

Tools

Submit Your Site to AIPush your URL to AI search engines Top 1 Million WebsitesFree top 1M websites — CSV download AI Bot ObservatoryEvery AI crawler & who blocks it AI Crawler Database900+ AI user agents + robots.txt gen AI Crawler ComparisonCompare two AI crawlers head-to-head AI Licensing / Pay-Per-CrawlWho can charge AI crawlers — Pay-Per-Crawl AI Robots.txt Policy BuilderGoal-based robots.txt (cite me, don't train)AI Crawler CheckerSee which AI bots your site blocks AI-Access BadgeFree live AI-status badge for your site AI Readiness CheckerScore your site 0–100 for AI Similar Site SearchFind websites like any domain Backlink CheckerWho links to any site — free All tools →

Toplists Browse free →

Sites similar to hdf5.com

Hdf5 alternatives & similar sites

The HDF Group - The HDF Group - ensuring long-term access and usability of HDF data and supporting users of HDF technologies — 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 Technology And Computing →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
hdfgroup.org ↗	85 match shared topic	The HDF Group - The HDF Group - ensuring long-term access and usability of HDF data and supporting users of HDF technologies	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
levelaccess.com ↗	60 match shared topic	End-to-End Digital Accessibility \| Level Access	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
essentialaccessibility.com ↗	60 match shared topic	End-to-End Digital Accessibility \| Level Access	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
infineon.com ↗	60 match shared topic	Semiconductor & System Solutions \| Infineon Technologies	en	technology-and-computing Adobe Experience Manager	robotsllmsaihumans	emailphone	none
minnit.chat ↗	60 match shared topic	Minnit Chat: Add a group chat for your website, live event, and more	en	technology-and-computing Paddle	robotsllmsaihumans	emailphone	none
imprtech.com ↗	60 match shared topic	Impression Technologies \| Digital Platforms for Online Growth	United States~ en	technology-and-computing	robotsllmsaihumans	emailphone	none
pusher.com ↗	60 match shared topic	Pusher \| Leader In Realtime Technologies	en	technology-and-computing Prismic	robotsllmsaihumans	emailphone	none
lfdecentralizedtrust.org ↗	60 match shared topic	LF Decentralized Trust - The open source foundation for decentralized technologies	en	technology-and-computing HubSpot	robotsllmsaihumans	emailphone	none
osgi.org ↗	60 match shared topic	OSGi Working Group \| The Eclipse Foundation	en	technology-and-computing	robotsllmsaihumans	emailphone	none
redskye911.com ↗	60 match shared topic	Home - RedSky Technologies	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
the-acap.org ↗	60 match shared topic	ACAP - Automated Content Access Protocol v1	en	technology-and-computing	robotsllmsaihumans	emailphone	none
access-ci.org ↗	60 match shared topic	Home - Access	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
erlef.org ↗	60 match shared topic	Erlang Ecosystem Foundation - Supporting the BEAM community	en	technology-and-computing	robotsllmsaihumans	emailphone	none
nownodes.io ↗	60 match shared topic	Affordable Blockchain Developer API \| Access RPC Nodes & WebSocket \| NOWNodes	en	technology-and-computing	robotsllmsaihumans	emailphone	none
grouplens.org ↗	60 match shared topic	GroupLens	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
getblock.io ↗	60 match shared topic	Web3 RPC Provider: Instant Access to Blockchain RPC Nodes \| GetBlock.io	en	technology-and-computing Prismic	robots llmsaihumans	emailphone	none
themeisle.com ↗	55 match shared topic	Themeisle - Built to Last WordPress Themes & Plugins	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
cookieadmin.net ↗	55 match shared topic	CookieAdmin - Cookie Consent Banner WordPress Plugin	en	technology-and-computing	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.