Katacoda
Verified live by HTTP probe across 18 observations. Pulse has been flat over the last 30 days.
HTTP liveness
realSignal telemetry
4 families · 2 observed · observed onlykatacoda.comedge
behind Cloudflareserver
cloudflareTranco rank
#380,517
Analyst read
generated from the observed metrics above · no external narrativeKatacoda's listed site resolved live when we last probed it on Aug 24, 2026, so we mark it verified alive. Its Pulse Index is 45.2 of 100, built from 2 of 4 observed signal families. Observed footprint: 9 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.
Comparable set
curated alternatives → functional tag-similarity| Company | Basis | Overlap | Pulse | 30d Δ | Status |
|---|---|---|---|---|---|
| Repl.it Classroomeducation | similar | 100% | — | — | — unverified |
| CSSKataseducation | similar | 89% | 8.0 | 0.0 | — unverified |
| Code Warseducation | similar | 89% | 48.3 | 0.0 | ● live |
| ThisCodeWorks Betadev-tools | tag-overlap | 89% | 1.5 | -30.4 | ■ inactive |
| Codewarseducation | similar | 89% | 48.3 | 0.0 | ● live |
| HackerRankeducation | similar | 80% | 49.1 | 0.0 | ● live |
| Codecademyeducation | similar | 80% | 40.0 | 0.0 | ● live |
| Pair Interviewsdev-tools | tag-overlap | 80% | 8.0 | 0.0 | — 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.