webtelemetry.dev
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Technology · Third-party services

Altcha

Not part of a site's own stack, so it is counted separately from what sites are built with.

Websites22working, as of their last visit
Found this week22first seen in the last 7 days
New launches0domains registered in the last 30 days
Over time

New websites using Altcha, per day

Websites first seen each day. The line starts on the first day of data.

Not enough history yet: trends appear once there are at least two days of data.

Cite

Cite this figure

webtelemetry.dev. (2026). New websites using Altcha, per day [Data set]. Retrieved September 28, 2026, from https://webtelemetry.dev/tech/altcha#fig-new-websites-using-altcha-per-day

Figures as of 28 September 2026, 21:52 UTC. They change as new sites are checked, so keep the date with them. Link to this figure

Hosting

Where they are hosted

Germany 5
France 2
Australia 1
Austria 1
Iran 1
Finland 1
Switzerland 1
Lithuania 1
Server country. Sites behind a CDN have no single location
Cite

Cite this figure

webtelemetry.dev. (2026). Where they are hosted [Data set]. Retrieved September 28, 2026, from https://webtelemetry.dev/tech/altcha#fig-where-they-are-hosted

Figures as of 28 September 2026, 21:52 UTC. They change as new sites are checked, so keep the date with them. Link to this figure

Stack

Often used alongside Altcha

PHP 59.1%
Let's Encrypt 45.5%
jQuery 40.9%
Cloudflare 36.4%
Nginx 31.8%
Drupal 31.8%
Google Tag Manager 27.3%
Microsoft 365 27.3%
Varnish 27.3%
Google Analytics 22.7%
Share of these websites that also use each, from a sample of up to 200,000 sites
Cite

Cite this figure

webtelemetry.dev. (2026). Often used alongside Altcha [Data set]. Retrieved September 28, 2026, from https://webtelemetry.dev/tech/altcha#fig-often-used-alongside-altcha

Figures as of 28 September 2026, 21:52 UTC. They change as new sites are checked, so keep the date with them. Link to this figure

Recently seen websites using Altcha