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Reliability leaderboards

Most reliable provider, by category, measured

Every leaderboard below ranks a category of services by uptime our own probes measured over a trailing 90-day window, never by a survey or a vendor's own claim. A category ranks only once at least three of its services have a full quarter of coverage; until then it says exactly when that changes.

Categories

How these are built

Same measurements as every other reading on this site: a probe-detected event in outage_events only, never a user report, a public post, or the vendor's own status page. A service's uptime is the share of the window our probes had no outage open for it; ties break on outage minutes, then outage count, then name. See the methodology page for the full detection rules, or the research section for the write-ups and quarterly reports built from the same league tables.