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AppSignal

Dutch all-in-one APM for errors, performance, hosts, logs, and uptime—built for product engineering teams that want EU-oriented SaaS packaging instead of hyperscale observability suites.

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AppSignal is an all-in-one application performance monitoring product from AppSignal B.V. in Amsterdam. It combines error tracking, performance monitoring, host metrics, log management, uptime checks, anomaly triggers, and process monitoring for development teams.

It exists as a Dutch-packaged alternative to hyperscale observability suites. The project dates to 2012. First-party integrations cover Ruby, Elixir, Node.js, Python, and front-end JavaScript, with OpenTelemetry for additional languages.

The concrete differentiator is usage-based packaging with unlimited users, teams, and applications, and the company states that core monitoring features are available on all plans rather than gated by tier.

EU-based APM (NL)ISO 27001 (claimed)Errors + APM + logs + hostsRequest-based packagingFree tier availableOpenTelemetry support

Shortlist AppSignal when a Dutch EU-hosted APM can replace a patchwork of error, performance, host, and log tools for a mid-size product team—especially Ruby/Elixir/Node/Python. Skip if you need self-hosted control or hyperscale multi-cloud observability; consider Sentry for errors-first workflows or Datadog/New Relic-class platforms for enterprise-wide telemetry.

Key capabilities

Track exceptions with backtraces and context alongside slow requests and throughput. Surfaces what broke, when, and which deploy is correlated—so mid-size teams debug without hopping between an error tool and a separate APM.

Host metrics (CPU, memory, disk, network), container/Kubernetes-oriented metrics, uptime checks, and cron/process heartbeats sit in the same product as APM—useful when you want infrastructure signals next to app traces without a second vendor.

Collect and search logs in-product, with vendor direction toward trace-connected logs and live tail (some capabilities marked beta). Reduces tool sprawl versus separate log and APM products for many SaaS teams.

Native agents/integrations for Ruby, Elixir, Node.js, Python, and JavaScript frameworks; OpenTelemetry path for Go, Java, PHP, Rust, and other OTel-instrumented services—important if your estate is polyglot.

Commercial packaging is oriented around request volume, with unlimited users/teams/apps on plans and a permanent free tier for low traffic (vendor-stated limits). Designed for predictable cost conversations versus pure per-host or seat-gated feature tiers—confirm current limits on the plans page.

Security page documents ISO 27001, GDPR claims, digital DPA signing, pentests, 2FA enforcement, and listed subprocessors. Fits EU procurement workflows better than many US-only APM vendors—still request certificates for the vendor file.

A colpo d'occhio

Legal entity / HQ
AppSignal B.V., Amsterdam, Netherlands
Product type
Managed APM / observability SaaS
Founded
2012 (first commit; per About)
Languages
Ruby, Elixir, Node.js, Python, JS + OpenTelemetry (Go, Java, PHP, Rust, …)
Commercial model
Request-based plans; free tier for low volume; trial for paid
Seats / apps
Unlimited users, teams, and applications (vendor packaging)
Hosting
EU-focused; Worldstream + AWS EMEA listed; US hosting coming soon
Self-host
No — managed service

Best fit when

  • You want one SaaS for errors, performance, hosts, uptime, and logs without building an observability stack
  • Your stack is Ruby, Elixir, Node.js, Python, or JS front ends—with OTel for additional languages
  • You prefer request-volume commercial packaging with unlimited seats/apps rather than per-host or per-seat maze pricing
  • EU data handling and a digitally signable DPA matter for procurement
  • You want engineer-to-engineer support rather than tier-1 ticket farms

Poor fit when

  • You require self-hosted APM/error infrastructure under your own keys and network
  • You need a full enterprise observability platform across large multi-cloud estates (SIEM, complex infra analytics, hundreds of integrations)
  • HIPAA is mandatory on day one without budget for the compliance add-on / BAA path
  • You only need lightweight error tracking and already standardized on Sentry SDKs with no APM ambition

Consider instead when

  • When: Errors-first debugging with huge ecosystem of SDKs is enough

    Consider: Sentry (hosted) or a self-hosted Sentry-compatible stack

    AppSignal is broader APM; Sentry-class tools may be simpler if performance/host/logs are out of scope.

  • When: You need hyperscale multi-product observability and enterprise packaging

    Consider: Datadog or New Relic (US incumbents)

    Larger surface area and ecosystem; different cost and complexity profile.

  • When: You must keep error telemetry fully self-hosted

    Consider: Self-hosted error platforms (e.g. Bugsink-class / open-source Sentry deployments)

    AppSignal is managed SaaS; self-host trades ops cost for control.

Giurisdizione e proprietà

Soggetto giuridico
AppSignal B.V. (Amsterdam)
Legge applicabile
Dutch / EU company; confirm contract terms in ToS/DPA
Capogruppo / controllo USA
Nessuna capogruppo USA nota
Esposizione CLOUD Act (indicativa)
Medium
Hosting / residenza
Primary hosting listed as Worldstream B.V. (NL); backups via AWS EMEA SARL; email via Mailgun Inc. (US). US account hosting is advertised as coming soon. Confirm your account region and backup path in writing.

No known US parent. Indicative CLOUD Act / US-transfer exposure is medium because of AWS-group backup and a US email subprocessor—not because AppSignal is a US company. Request current DPA exhibits. Not legal advice.

  • ISO 27001Vendor claimed
  • SOC 2 / SOC 3Unknown
  • GDPR / EU data protectionVendor claimed
  • Data processing agreement (B2B)Vendor claimed
  • +4

Considerations & known limitations

  • MediumNot a full enterprise observability suite

    Designed for product engineering teams; may lack the breadth of Datadog/New Relic for large multi-cloud SRE orgs.

  • MediumUS operations and cloud subprocessors

    Security page lists AWS EMEA SARL for backups and Mailgun (US) for email, plus US-based executives on a remote team. Even with Worldstream (NL) hosting and a Dutch B.V., vendor-risk files should document transfer tools and subprocessor scopes—not stop at 'EU company'.

  • LowUS hosting coming soon

    Optional US residency may help US customers but complicates a strict EU-only policy if not carefully selected—confirm default region per account.

  • MediumManaged SaaS only

    No self-hosted AppSignal control plane; if you cannot send telemetry off-prem, choose a self-hosted alternative.

  • LowAI/MCP production context

    MCP server and auto-fix workflows can expose error/log context to AI tools—set policy for which environments may connect assistants.

Open questions for due diligence

  • Which data region will our production account use by default, and can EU-only be contractually guaranteed?
  • Can we obtain the current ISO 27001 certificate and any SOC 2 report under NDA?
  • What is the full subprocessor list and DPA exhibit for our workload (including Mailgun/AWS scopes)?
  • Which retention windows apply to traces, samples, and logs on our intended plan—and what is long-term log storage pricing model?
  • Are MCP/AI features optional and scoped so production PII can be excluded?
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Domande Frequenti

Ruby and Elixir are long-standing first-class ecosystems, but AppSignal also supports Node.js, Python, and front-end JavaScript natively, with OpenTelemetry coverage for additional languages (e.g. Go, Java, PHP, Rust). Check docs for framework-specific install paths.

AppSignal markets an EU-based APM posture. Public security materials list Worldstream B.V. for hosting and AWS EMEA SARL for backups. A US data-hosting option is advertised as coming soon—confirm the region for your organization before relying on EU-only assumptions.

Yes for DPA: customers can sign a Data Processing Agreement digitally in the product admin. The security page states ISO 27001 certification and GDPR compliance; HIPAA is available as a compliance add-on. Request current certificates/reports for formal vendor review.

Plans are primarily request-volume based, with a free tier for low monthly request counts and a trial for paid plans. The vendor states core features are included across plans and that monitoring is not cut off for temporary spikes under its upgrade policy. Always verify current limits on the official plans page.

Prefer AppSignal when you want errors + performance + hosts + logs from a Dutch EU-oriented SaaS with simpler packaging. Prefer Sentry when errors-first workflows dominate. Prefer Datadog/New Relic-class tools when you need broad enterprise observability across large multi-cloud estates.

No. AppSignal is a managed SaaS product. If telemetry cannot leave your environment, evaluate self-hosted error/APM alternatives instead.