X-Clacks-Overhead is a non-standard HTTP header used to transmit tribute messages within server responses.
These statistics include detections outside the stricter public preview. Counts can exceed the qualifying domains above; they describe our coverage, not internet-wide market share.
Search databaseX-Clacks-Overhead is a unknown technology. X-Clacks-Overhead is a non-standard HTTP header used to transmit tribute messages within server responses.. Currently detected on 97 quality-eligible websites in the Glympt index.
Official website: xclacksoverhead.org.
Includes observations below the public country preview’s confidence and quality thresholds. These are website geography signals, not verified business locations.
Counts include broader stored detections, without the public preview’s quality filters. Co-detection describes an observation, not a recommendation or integration guarantee.
By scanning headers, HTML, JS globals, meta tags, and cookies. Detection is automated and non-intrusive.
The average detector score for X-Clacks-Overhead is 100/100. It measures matching evidence, not independently verified accuracy.
Yes. Pro and Business plans include CSV export with full filtering.
Observation dates are shown on each report. Refresh timing varies with crawler capacity; you can request a fresh scan from the dashboard.
Our database recorded a net change of 0 observations in 30 days. New coverage and rescans affect this number; it is not a measure of market growth or migrations.
A 0–100 detector score based on matching signals. Stronger evidence increases the score, but false positives and missed technologies remain possible.