Scout APM vs SigNoz

Scout APM is a cloud application performance monitoring and observability platform from Zimuth, Inc., available through web and API interfaces. It combines traces, metrics, logs, error tracking, and alerting for engineering teams investigating performance problems. Scout lists agents for Ruby, Python, PHP, Elixir, and Node.js. It detects slow database queries and N+1 patterns and provides query analysis. Its anomaly detection learns normal behavior for each endpoint and alerts when that behavior changes without requiring configured thresholds. An MCP server, CLI, and API let AI coding agents access production errors, traces, and performance data. Integrations include Slack, PagerDuty, Splunk On-Call, Opsgenie, Discord, Zapier, webhooks, Rollbar, Sentry, Honeybadger, Bugsnag, and GitHub. The Free plan includes 300K monthly transactions, 1 GB log data, 5,000 errors, one anomaly-monitored endpoint, and unlimited users and apps. Paid plans start at $19 a month, with a 14-day trial. Human support is included on every plan; paid plans add priority response, and Enterprise includes premier support.

SigNoz is an open-source observability tool for monitoring applications and infrastructure. It brings logs, metrics, traces, and exceptions together with alerting and separate explorers for Trace, Logs, and Metrics. The OpenTelemetry-native design does not require proprietary agents. A Query Builder supports aggregations, filters, and formulas across signal types, while alerts can detect thresholds, anomalies, and Apdex conditions. Users can create dashboards from metrics, logs, and traces. APM charts cover p99 latency, error rate, Apdex, and operations per second, alongside database and external-call monitoring. Distributed tracing uses flamegraph and Gantt-chart views to follow requests across services. SigNoz stores telemetry in ClickHouse with hot and cold tiers. It can run in the cloud or be self-hosted using Docker, Docker Swarm, or Kubernetes. Cloud provides 30-day access to all features for new users; the self-hosted Community option is free but requires users to manage infrastructure, storage, scaling, upgrades, and backups.