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VC Intelligence Report

Google Books Ngram Viewer

Education — Graph the occurance of phrases in books over time [Tech]
EducationWeak defense · data moat (weak)open-sourceest. 2015
● Verified live
Verdict from HTTP liveness real
last probed Aug 27, 2026
Pulse 40.0 · 1/4
40.0
Pulse Index
1/4 families · real
0.0
30-day Δ
pulse momentum · real
34
HTTP probes
liveness history · real
5
Functional tags
observed attributes · real
Risk read derived from observed signals

Verified live by HTTP probe across 34 observations. Pulse has been flat over the last 30 days. Observation is liveness-only: no tracked press, repository, or traffic rank — existence is confirmed, momentum is unobserved.

HTTP liveness

real
34 probes · Jun 16, 2026 → Aug 27, 2026aliveredirecteddeadunverified

Signal telemetry

4 families · 1 observed · observed only
Liveness probereal
alive in 100% of 34 probesavg response 520 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
google.comedge
direct originserver
gwsTranco rank
unranked
Domain age & certificate data not yet collected

Analyst read

generated from the observed metrics above · no external narrative

Google Books Ngram Viewer's listed site resolved live when we last probed it on Aug 27, 2026, so we mark it verified alive. It has fewer than two observed signal families, so no Pulse Index is composed — the evidence strip shows what is and isn’t present. Observed footprint: 5 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
CompanyBasisOverlapPulse30d ΔStatus
Principia Cybernetica Webeducationsimilar100%40.00.0● live
NSTMF Gravityeducationsimilar100%44.20.0● live
Bungo Searchentertainmenttag-overlap100%8.00.0— unverified
#WhileAtHomeeducationsimilar83%42.70.0● live
Books4Languageseducationsimilar83%8.90.0— unverified
Dissemineducationsimilar83%10.10.0— unverified
Ycombinator Office Hours - Sam Altmaneducationsimilar83%16.00.0→ redirected
Six Degrees of Wikipediaeducationsimilar83%41.30.0● 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 alternatives2
Open sourceNo
Public APINo
Free tierNo
Enterprise tierNo

Funding & team

real

1 disclosed funding round on record. See the full cap table on the product profile →

RAW TELEMETRY last 14 probes
PROBEDHTTPORIGIN → RESOLVEDSERVERMSVERDICT
2026-08-27 18:04Z200google.comgws82alive
2026-08-26 09:35Z200google.comgws1704alive
2026-08-19 13:58Z200google.comgws1234alive
2026-08-11 00:33Z200google.comgws406alive
2026-08-08 06:26Z200google.comgws1596alive
2026-08-05 18:46Z200google.comgws77alive
2026-07-30 18:00Z200google.comgws1045alive
2026-07-23 09:20Z200google.comgws71alive
2026-07-22 09:24Z200google.comgws65alive
2026-07-21 09:24Z200google.comgws90alive
2026-07-20 09:52Z200google.comgws203alive
2026-07-19 09:03Z200google.comgws225alive
2026-07-18 08:44Z200google.comgws360alive
2026-07-17 09:05Z200google.comgws115alive
Full redirect chains, response headers, and DNS records are not captured by the current probe.
Launch Sentinel tear sheet · Google Books Ngram Viewer · as of 2026-08-28 · launchsentinel.com/reports/google-books-ngram-viewer · liveness, pulse and press figures are observed data with provenance shown per panel.