Education — Exercism provides daily coding challenges across multiple programming languages with community-d…
Educationfreemiumest. 2013
— Unverified
Verdict from HTTP liveness real
last probed Aug 24, 2026
Pulse 14.4 · 2/4
14.4
Pulse Index
2/4 families · real
-8.0
30-day Δ
pulse momentum · real
17
HTTP probes
liveness history · real
8
Functional tags
observed attributes · real
Risk read derived from observed signals
Liveness is unverified — no conclusive probe observation exists for the recorded URL. Pulse momentum is negative over 30 days (-8.0) — observed activity is receding.
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 2619 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.
generated from the observed metrics above · no external narrative
Exercism's site could not be verifiably probed when we last probed it on Aug 24, 2026, so its status is unverified — we do not guess. Its Pulse Index is 14.4 of 100, built from 2 of 4 observed signal families. Observed footprint: 8 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 modelfreemium
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 12:25Z
403
exercism.io → exercism.org
cloudflare
1443
cf_block
2026-08-11 14:34Z
403
exercism.io → exercism.org
cloudflare
715
cf_block
2026-08-11 14:34Z
403
exercism.io → exercism.org
cloudflare
2513
cf_block
2026-08-09 00:14Z
403
exercism.io → exercism.org
cloudflare
1943
cf_block
2026-08-05 20:06Z
200
exercism.io → exercism.org
cloudflare
2433
redirected_offsite
2026-07-30 19:22Z
200
exercism.io → exercism.org
cloudflare
2751
redirected_offsite
2026-07-26 16:03Z
200
exercism.io → exercism.org
cloudflare
2236
redirected_offsite
2026-07-18 12:48Z
200
exercism.io → exercism.org
cloudflare
3476
redirected_offsite
2026-07-13 10:26Z
200
exercism.io → exercism.org
cloudflare
4398
redirected_offsite
2026-07-04 14:07Z
200
exercism.io → exercism.org
cloudflare
6382
redirected_offsite
2026-06-23 15:18Z
200
exercism.io → exercism.org
cloudflare
2196
redirected_offsite
2026-06-21 18:20Z
200
exercism.io → exercism.org
cloudflare
1696
redirected_offsite
2026-06-21 18:20Z
200
exercism.io → exercism.org
cloudflare
2014
redirected_offsite
2026-06-20 07:48Z
200
exercism.io → exercism.org
cloudflare
2472
redirected_offsite
Full redirect chains, response headers, and DNS records are not captured by the current probe.
Launch Sentinel tear sheet · Exercism · as of 2026-08-28 · launchsentinel.com/reports/exercism · liveness, pulse and press figures are observed data with provenance shown per panel.