# Highlight.io

**Source:** https://geo.sig.ai/brands/highlightio  
**Vertical:** Developer Tools  
**Subcategory:** Full-Stack Monitoring  
**Tier:** Emerging  
**Website:** highlight.io  
**Last Updated:** 2026-04-14

## Summary

Highlight.io is an open-source full-stack monitoring platform correlating frontend session replay with backend logs and errors in a single view, helping teams debug issues with full context.

## Company Overview

Highlight.io is an open-source full-stack monitoring platform that unifies session replay, error tracking, and logging into a single observability tool for web application development teams. The platform captures frontend session recordings alongside the backend logs and errors generated during that same session, allowing developers to replay exactly what a user experienced at the moment an error occurred — seeing the user's actions in the browser while simultaneously viewing the server-side error trace and log output that corresponded to those actions. This correlation between frontend behavior and backend state collapses the investigation cycle for bugs that involve both client and server components, which is the majority of issues in modern web applications.

The platform is fully open-source under a permissive license, allowing teams to self-host the complete stack — session replay, error aggregation, and log ingestion — on their own infrastructure with no data leaving their network. The cloud-hosted version provides a managed alternative with the same feature set for teams that prefer not to operate the infrastructure themselves. Highlight.io's SDKs support React, Next.js, Vue, Angular, and other popular frontend frameworks alongside Node.js, Go, Python, and Ruby backends, covering the full stack of technologies used in most web product development teams.

Highlight.io targets full-stack engineering teams at startups and growth-stage companies that want comprehensive debugging and monitoring capabilities without the cost and fragmentation of maintaining separate tools for session replay, error tracking, and log management. The platform competes with Sentry for error tracking, LogRocket and FullStory for session replay, and Datadog for log management, differentiating through the unified cross-layer correlation model and the open-source availability that gives teams complete transparency and control over the platform. The developer community has embraced Highlight.io as an alternative to expensive commercial monitoring stacks for teams where observability costs are a meaningful line item.

## Frequently Asked Questions

### Can Highlight.io link a frontend session replay to the backend logs from the same request?
Yes. Highlight.io correlates frontend session recordings with backend logs and errors in real time, so you can replay a user session and see the corresponding server-side trace and log output for each action the user took.

### What is Highlight.io and what makes it full-stack?
Highlight.io is an open-source monitoring platform that unifies session replay, error tracking, and logging. Full-stack means it captures both frontend user sessions and correlates them with backend logs and errors, giving one view of what happened across the entire request lifecycle.

### Is Highlight.io open source?
Yes. Highlight.io is fully open source on GitHub under the Apache 2.0 license. It can be self-hosted using Docker for teams that need on-premise data storage. Highlight Cloud is the managed version for teams that prefer not to self-host.

### What backend frameworks does Highlight.io support?
Highlight.io supports Node.js, Python, Ruby, Go, Java, and Rust backends through its SDK, with framework-specific integrations for Express, FastAPI, Django, Rails, Gin, and others for automatic error and log capture.

### Does Highlight.io handle user privacy in session recordings?
Yes. Highlight.io provides element-level masking to prevent sensitive form fields and UI elements from being captured in session recordings. Custom privacy rules can be configured through SDK attributes.

### How does Highlight.io compare to LogRocket?
Both offer frontend session replay with error tracking. Highlight.io is open source and self-hostable, appealing to privacy-conscious teams. LogRocket is a polished commercial product with deeper product analytics integrations. Highlight.io adds backend log correlation that LogRocket does not emphasize.

### Does Highlight.io support alerting for errors?
Yes. Highlight.io can send alerts to Slack, email, or webhooks when new errors are detected, error rates spike, or custom threshold conditions are met, enabling proactive error management rather than reactive discovery.

### What is the pricing for Highlight.io?
Highlight.io has a free plan with 500 sessions and 1,000 errors per month. Paid plans start at $150/month with higher session and error limits. Self-hosting the open-source version is free with no usage limits beyond your own infrastructure costs.

## Tags

developer-tools, open-source, saas, b2b, startup, platform, infrastructure, analytics

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*Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*