Errsole review

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Errsole is an open-source logging and runtime monitoring module for Node.js applications, aimed at solo developers and small to mid-market teams that want to collect and inspect application logs in a self-hosted environment. It automatically captures Node.js console logs, while a custom logger adds multiple log levels and metadata. A web dashboard provides filtering and search, and notifications can flag critical errors or application crashes. This makes Errsole a practical fit when the priority is visibility into logs and crash events rather than a broad monitoring suite.

Its standout strength is the combination of collection, storage, and viewing in one logging workflow. Logs can be stored in files or databases, with configurable rotation; supported database options include MongoDB, MySQL, PostgreSQL, SQLite, MariaDB, and OracleDB. The dashboard can run alongside the application or as a separate Node.js app, giving teams a choice in how they deploy the viewer. Integrations include Node.js, Bun.js, Next.js, Winston, and Pino. Dashboard authentication and team management support shared access, while standalone deployment may suit teams that want the log viewer separated from the monitored app.

Errsole is open source under the MIT license, and its pricing model is open source with a free plan. The product is available for web use and self-hosted deployment; teams should expect to operate that deployment themselves. Support channels are community and documentation. Its scope is narrower than full runtime monitoring: the described capabilities center on log collection, search, storage, and critical-error notifications, rather than tracing or broad application performance monitoring. Choose Errsole if a self-managed Node.js logging workflow is the main need; teams seeking a wider APM feature set should consider a broader alternative.

Errsole pros and cons

• Where it wins
  • Collects console logs automatically and supports custom levels and metadata
  • Searchable web dashboard can run with the app or as a standalone viewer
  • Stores logs in files or databases with configurable rotation
• Where it doesn't
  • Focused on logs rather than tracing or broad application performance monitoring
  • Self-hosted deployment requires teams to manage their own environment
  • Support is through community and documentation

Errsole fact sheet, pricing and score →

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Last updated 9 Oct 2026 · How we research and update