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Ultraviolet Observability vs Upcheck

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Ultraviolet Observability compared with Upcheck
DetailUltraviolet Observability logo Ultraviolet ObservabilityUpcheck logo Upcheck
What it doesSelf-hosted observability platform for Kubernetes that keeps all telemetry data within your firewall Website monitoring for teams
StageStartup Not given
FoundedNot given Not given
Based inNot given GB
Pricing modelPaid Paid
PricingEvaluation: Free for 30 days with full-function core and unlimited nodes during trial. Connected: $25 per node per month with 10-node minimum, billed on node-minutes. Air-gapped: Annual hand-carried license with no call-home. No per-GB, per-span or per-user fees. $10 base per month, plus $1 per monitored website per month
Key features
  • Distributed traces and APM with automatic instrumentation across HTTP, gRPC, DNS and databases
  • Logs correlated to traces with severity faceting and live tail
  • Metrics pipeline supporting Prometheus remote-write and Fluent Bit
  • Kubernetes and infrastructure monitoring with node and workload health
  • Dashboards, SLOs with error budgets and Datadog dashboard import
  • Local alerting rules evaluated inside the core routed to Slack, PagerDuty, Teams or email
  • Real user monitoring with Core Web Vitals, session replay and browser to backend trace stitching
  • Multi-site support with remote clusters dialing home over outbound mTLS
  • OpenTelemetry-native support for OTLP over gRPC and HTTP
  • No code instrumentation required for application tracing
  • Uptime checks every 5 minutes with HTTP method, path, headers, and expected status options
  • SSL/TLS certificate expiry tracking with warnings at 30, 14, and 7 days
  • DNS record monitoring with change detection every 6 hours
  • Domain registration expiry monitoring over RDAP
  • Page change monitoring with element tracking and numerical comparison
  • TCP port monitoring on up to ten ports every 5 minutes
  • Alerts via email, Slack, Discord, Microsoft Teams, or webhook
  • Two-probe confirmation before alerts to prevent false positives
  • Full certificate details including issuer, SANs, serial, and chain
What makes it different
  • Zero telemetry egress and all data stays on customer infrastructure
  • Predictable pricing based on node-minutes with no per-GB or per-span charges
  • Automatic instrumentation with no code changes required
  • Monitors from outside the system with real HTTPS requests, not synthetic probes
  • Two-probe confirmation eliminates false alerts from transient failures
  • API monitoring built into standard uptime checks with no separate product to buy
  • Clear DNS visibility with every record checked every 6 hours for changes
Community votes00
DR (Domain Rating by Ahrefs)23 +5 (up) since last check6 +1 (up) since last check
Trust Flow (Majestic)03
Citation Flow (Majestic)2023
Referring domains (Majestic)514

5 details filled in for both companies.

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