The recorded URL now redirects offsite — often an acquisition, rebrand, or wind-down; the destination is recorded in the telemetry below. Pulse has been flat over the last 30 days.
HTTP liveness
real
17 probes · Jun 16, 2026 → Aug 24, 2026aliveredirecteddeadunverified
Signal telemetry
4 families · 2 observed · observed only
Liveness probereal
alive in 0% of 17 probesavg response 2162 ms
Developer tractionchecked · none
No public repository linked — GitHub signals are not tracked for this product.
Press & sentimentchecked · none
No coverage found in the tracked press corpus. Absence of press is itself a signal at this stage.
Web footprintreal
resolved host cesium.comedge direct originserver AmazonS3Tranco rank #1,077,630
Domain age & certificate data not yet collected
Analyst read
generated from the observed metrics above · no external narrative
Cesium.js's listed URL redirected off its original domain (to https://cesium.com/) when we last probed it on Aug 24, 2026 — we mark it redirected, not dead. Its Pulse Index is 19.0 of 100, built from 2 of 4 observed signal families. Observed footprint: 11 functional tags. It has no curated competitive-alternative edges yet, so the comparable set below is functional tag-similarity — read it with the confidence flags.
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 attributes
Business modelopen-source
Liveness tierunknown
Competitive alternativesnone linked
Open sourceNo
Public APINo
Free tierNo
Enterprise tierNo
Funding & team
not in source
No 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.
RAW TELEMETRY last 14 probes▾
PROBED
HTTP
ORIGIN → RESOLVED
SERVER
MS
VERDICT
2026-08-24 12:17Z
200
cesiumjs.org → cesium.com
AmazonS3
2278
redirected_offsite
2026-08-11 14:25Z
200
cesiumjs.org → cesium.com
AmazonS3
727
redirected_offsite
2026-08-11 14:25Z
200
cesiumjs.org → cesium.com
AmazonS3
2842
redirected_offsite
2026-08-09 00:05Z
200
cesiumjs.org → cesium.com
AmazonS3
2918
redirected_offsite
2026-08-05 19:57Z
200
cesiumjs.org → cesium.com
AmazonS3
3682
redirected_offsite
2026-07-30 19:13Z
200
cesiumjs.org → cesium.com
AmazonS3
1575
redirected_offsite
2026-07-26 15:54Z
200
cesiumjs.org → cesium.com
AmazonS3
2162
redirected_offsite
2026-07-18 12:40Z
200
cesiumjs.org → cesium.com
AmazonS3
3110
redirected_offsite
2026-07-12 18:04Z
200
cesiumjs.org → cesium.com
AmazonS3
2097
redirected_offsite
2026-07-04 13:58Z
200
cesiumjs.org → cesium.com
AmazonS3
2107
redirected_offsite
2026-06-23 15:09Z
200
cesiumjs.org → cesium.com
AmazonS3
1926
redirected_offsite
2026-06-21 18:12Z
200
cesiumjs.org → cesium.com
AmazonS3
1719
redirected_offsite
2026-06-21 18:12Z
200
cesiumjs.org → cesium.com
AmazonS3
1757
redirected_offsite
2026-06-20 07:38Z
200
cesiumjs.org → cesium.com
AmazonS3
1369
redirected_offsite
Full redirect chains, response headers, and DNS records are not captured by the current probe.
Launch Sentinel tear sheet · Cesium.js · as of 2026-08-28 · launchsentinel.com/reports/cesium-js · liveness, pulse and press figures are observed data with provenance shown per panel.