RDoc

RDoc produces HTML and command-line documentation for Ruby projects.

Disclaimer: The data used in this report is collected from the current VersionDB release (February 2026) containing a total of 12,727,168 domains. All statistics reflect this dataset and do not claim to represent all websites globally.

RDoc Complementary Technologies

Technologies frequently found with RDoc.

Live RDoc Sites

7 Complementary Tech

12 Most Frequent Complementary Tech

RDoc Versions

Version	Sites
6.4.0	1
6.5.1.1	1
6.0.1	1
6.10.0	1
6.12.0	1

Websites Using RDoc

An unordered, non-ranked list generated from observed technology data.

Domain	Server Location	ASN	Crawl Date
ruby.github.io	🇺🇸 United States	Fastly, Inc.	February 14, 2026
rubyrubyrubyruby.dev	🇺🇸 United States	Fastly, Inc.	February 13, 2026
a-k-r.org	🇯🇵 Japan	DigiRock, Inc.	February 13, 2026
bioruby.org	🇺🇸 United States	GitHub, Inc.	February 8, 2026
hardoc.org	🇯🇵 Japan	ASJ INC.	February 7, 2026
librdf.org	🇺🇸 United States	New Dream Network, LLC	February 7, 2026
ruby-doc.org	🇫🇮 Finland	Hetzner Online GmbH	February 6, 2026

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Top RDoc Identifiers

Who is using RDoc and where.

Countries

ASNs

Languages

TLDs

Most Frequent RDoc Identifiers and Complementary Tech

Most frequently encountered identifiers for RDoc and its complementary technologies.

Technology	Sites
Ruby	7
Apache HTTP Server	4
GitHub Pages	3
jQuery	3
Varnish	2
Fastly	2
Lightbox	1
Google Analytics	1
Vue.js	1
BuySellAds	1
Carbon Ads	1
Ubuntu	1

Language	Sites
English	6
German	1
Japanese	1
French	1

TLD	Sites
org	5
dev	1
github.io	1