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Observable

Developer Tools — Discover insights w/ interactive notebooks for data analysis
Developer Toolsopen-sourceest. 2018
● Verified live
Verdict from HTTP liveness real
last probed Aug 27, 2026
Pulse 48.3 · 2/4
48.3
Pulse Index
2/4 families · real
0.0
30-day Δ
pulse momentum · real
46
HTTP probes
liveness history · real
10
Functional tags
observed attributes · real
Risk read derived from observed signals

Verified live by HTTP probe across 46 observations. Pulse has been flat over the last 30 days.

HTTP liveness

real
46 probes · May 25, 2026Aug 27, 2026aliveredirecteddeadunverified

Signal telemetry

4 families · 2 observed · observed only
Liveness probereal
alive in 100% of 46 probesavg response 869 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
observablehq.com
edge
behind Cloudflare
server
cloudflare
Tranco rank
#41,994
Domain age & certificate data not yet collected

Analyst read

generated from the observed metrics above · no external narrative

Observable's listed site resolved live when we last probed it on Aug 27, 2026, so we mark it verified alive. Its Pulse Index is 48.3 of 100, built from 2 of 4 observed signal families. Observed footprint: 10 functional tags. It sits on the competitive-alternatives graph with 1 linked rival, so the comparable set below leans on curated edges.

Comparable set

curated alternatives → functional tag-similarity
CompanyBasisOverlapPulse30d ΔStatus
Plot.lyanalyticstag-overlap83%24.20.0→ redirected
data.worldanalyticstag-overlap82%48.30.0● live
Silk for Journalismanalyticstag-overlap80%40.0+32.0● live
Cellfigproductivitytag-overlap75%8.00.0— unverified
Mode Python Notebooksdev-toolssimilar75%19.80.0→ redirected
MapDanalyticstag-overlap73%9.00.0— unverified
Finvizfinancetag-overlap70%49.50.0● live
Cohort Visualizeranalyticstag-overlap70%40.00.0● live

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 tierquiet
Competitive alternatives1
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
PROBEDHTTPORIGIN → RESOLVEDSERVERMSVERDICT
2026-08-27 18:12Z200observablehq.comcloudflare663alive
2026-08-26 09:42Z200observablehq.comcloudflare1473alive
2026-08-19 14:03Z200observablehq.comcloudflare1260alive
2026-08-11 00:38Z200observablehq.comcloudflare767alive
2026-08-08 06:32Z200observablehq.comcloudflare527alive
2026-08-05 18:51Z200observablehq.comcloudflare1481alive
2026-07-30 18:05Z200observablehq.comcloudflare913alive
2026-07-23 09:27Z200observablehq.comcloudflare424alive
2026-07-22 09:30Z200observablehq.comcloudflare951alive
2026-07-21 09:31Z200observablehq.comcloudflare727alive
2026-07-20 09:59Z200observablehq.comcloudflare802alive
2026-07-19 09:10Z200observablehq.comcloudflare496alive
2026-07-18 08:50Z200observablehq.comcloudflare421alive
2026-07-17 09:13Z200observablehq.comcloudflare1262alive
Full redirect chains, response headers, and DNS records are not captured by the current probe.
Launch Sentinel tear sheet · Observable · as of 2026-08-28 · launchsentinel.com/reports/observable · liveness, pulse and press figures are observed data with provenance shown per panel.