Technology answer

mod_rack

330

companies run it, <0.01% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 1,678 live hosts run it, of 191,809,695 hosts in the index, <0.01%. A host is a website, not a company.

Companies by month

No published series

330 companies is under the publication floor of 1,000, and the fixed panel anchored at 31 Dec 2020 carries 121 of them. A monthly line drawn off that many observations would be noise at the same weight as a line off millions, so this page states the count and its date and publishes no series.

First discovered 5 Oct 2019, last discovered 10 Sept 2026.

Both denominators, and a third

Shares of the same 330each row a different wholelanding 12 Sept 2026

Denominator

Companies

Share

companies in the index

54,527,857

<0.01%

companies running anything in Web Servers

32,553,744

<0.01%

companies running anything in Web server modules and extensions

393,083

0.08%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, mod_rack is rank 12 of 13 technologies in Web server modules and extensions.

Open as a segment

330 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-mod-rack

Open the segment

Catalogue record

As recorded in the cataloguetaxonomy release tax-2026.10last discovered 10 Sept 2026

Apache module (via Phusion Passenger) to run Rack/Rails apps.

mod_rack is the Apache integration provided by Phusion Passenger to host Ruby Rack and Rails applications within Apache HTTP Server. Passenger offers an open-source core with commercial editions for advanced features and support.

Kindextension

VendorPhusion Passenger, phusionpassenger.com

PathInfrastructure and Hosting > Web Servers > Web server modules and extensions

Slugmod-rack

Deploymentself-hosted

Pricingfreemium, subscription, enterprise

Open sourceyes

First discovered2019-10-05

Last discovered2026-09-10

Taxonomy releasetax-2026.10

One click under this answer

Subcategory answerWeb server modules and extensionsCompanies running anything in Web server modules and extensions, 393,083 of 54,527,857 in the index, and the technologies ranked in it.Category answerWeb ServersThe category above this one, with its subcategories and the companies in each.CatalogueAll 8,177 technologiesRanked by the companies running them, with the publication gate named and the long tail drawn.