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Self-Hosted Developer Tools Monitoring Observability Error Tracking Session Replay

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9,367

Forks

670

Watchers

29

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Last Updated: 08-21-2026 12:38 AM (UTC)

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With over 9,000 GitHub stars and a focus on developer experience over legacy monitoring complexity, Highlight.io delivers a unified observability platform that correlates frontend user behavior with backend performance data in a single interface. The session replay engine captures high-fidelity DOM recordings showing exactly what users experienced, including console logs, network requests, page transitions, and user interactions, with configurable privacy redaction for sensitive content. Error monitoring automatically groups and deduplicates errors, surfaces affected user sessions, and provides full stack traces with source map support for minified production code. The logging pipeline ingests structured and unstructured logs from any backend service with automatic property extraction, full-text search, and configurable alerting thresholds. Distributed tracing tracks request flows across microservices with embedded links to associated sessions, errors, and logs for complete request lifecycle visibility. The metrics system collects custom application metrics alongside built-in web vitals and performance data for trend analysis and anomaly detection. Search across all telemetry types uses a unified query language with automatic attribute discovery and saved views for recurring investigations. Integrations connect with Slack, Discord, Linear, Jira, Vercel, and dozens of other developer tools for notification routing and workflow automation. SDKs cover React, Next.js, Vue, Angular, Python, Go, Ruby, Java, PHP, and Elixir with framework-specific instrumentation. Self-hosted deployment runs via Docker Compose with ClickHouse for analytics storage. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache 2.0 licensed.

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Benefits

  • Unified Full-Stack Observability
  • Correlate frontend session replays with backend errors, logs, and traces in a single platform, eliminating the need to switch between separate monitoring tools when debugging production issues.
  • High-Fidelity Session Replay
  • DOM-based recordings capture exactly what users experienced including console logs, network requests, and interactions with configurable privacy redaction for GDPR compliance.
  • Cross-Signal Investigation Workflow
  • Click from an error to the exact moment in a user session where it occurred, view associated backend logs and traces, and understand the complete context without manual correlation.
  • Modern Developer Experience
  • Purpose-built for modern development workflows with framework-specific SDKs, Vercel integration, Linear and Jira issue tracking, and a clean interface designed for today's engineering teams.

Features

  • DOM Session Recording
  • Pixel-perfect session replay captures page transitions, user clicks, form inputs, and console activity with Shadow DOM and Canvas support.
  • Error Monitoring with Grouping
  • Automatic error deduplication, affected session counts, source map support, and stack trace analysis with customizable grouping rules.
  • Structured Log Search
  • Full-text search across structured and unstructured logs with automatic property extraction, saved views, and threshold-based alerting.
  • Distributed Request Tracing
  • Trace request flows across microservices with embedded links to sessions, errors, and logs for complete request lifecycle debugging.
  • Custom Metrics Dashboard
  • Web vitals, application metrics, and custom counters with trend analysis, anomaly detection, and configurable dashboard views.