Blacklight by The Markup
Verified live by HTTP probe across 33 observations. Pulse has been flat over the last 30 days.
HTTP liveness
realSignal telemetry
4 families · 2 observed · observed onlythemarkup.orgedge
direct originserver
nginx/1.18.0Tranco rank
#49,418
Analyst read
generated from the observed metrics above · no external narrativeBlacklight by The Markup's listed site resolved live when we last probed it on Aug 27, 2026, so we mark it verified alive. Its Pulse Index is 48.2 of 100, built from 2 of 4 observed signal families. Observed footprint: 6 functional tags. It sits on the competitive-alternatives graph with 2 linked rivals, so the comparable set below leans on curated edges.
Comparable set
curated alternatives → functional tag-similarity| Company | Basis | Overlap | Pulse | 30d Δ | Status |
|---|---|---|---|---|---|
| Privacy Badgersecurity | curated | — | 40.0 | 0.0 | ● live |
| Ghosterysecurity | curated | — | 49.5 | 0.0 | ● live |
| EarthWindMapproductivity | tag-overlap | 100% | 48.5 | 0.0 | ● live |
| Disruptive Innovation Festivaleducation | tag-overlap | 86% | 16.0 | 0.0 | → redirected |
| COVID-19 Dataanalytics | tag-overlap | 86% | 16.0 | 0.0 | → redirected |
| Has Donald Trump Released his Taxes Yet?other | tag-overlap | 83% | 40.0 | 0.0 | ● live |
| Vision In Parkinson'shealth | tag-overlap | 83% | 40.0 | 0.0 | ● live |
| Is Pmarca Tweeting Againentertainment | tag-overlap | 83% | — | — | — unverified |
Confidence reflects source and category coherence: curated = an editorially linked alternative; similar = strong functional tag-overlap in the same category; tag-overlap = shared tags only and may be noisy. Overlap is the shared functional-tag ratio (Jaccard) for tag-matched rows. Pulse is the observed-activity index real and 30d Δ its signed month change; a dash means insufficient observed history, never zero.
Structure
observed attributesFunding & team
not in sourceNo disclosed funding in our sources. Funding data covers only ~1% of the corpus (462 rounds across 79K products), so absence here is unknown, not zero— we don't estimate a number we can't source.