What is Highlight.io used for?

Highlight.io is an open-source full-stack monitoring platform that combines session replay, error monitoring, logging and distributed tracing, offered hosted or self-hosted. It is a good fit for reproducing user-reported bugs from replays, full-stack error and log monitoring, and small teams wanting one monitoring tool.

Is Highlight.io open source?

Yes. Highlight.io is open source under a custom licence. Its source code is on GitHub at highlight/highlight and is written mainly in TypeScript.

Is Highlight.io free?

Yes. Highlight.io is open source, so the software itself is free to use under the terms of its own licence. A managed cloud version is also available.

Can I self-host Highlight.io?

Yes. Highlight.io can be self-hosted on your own server or infrastructure.

What is Highlight.io an alternative to?

Highlight.io is an open-source alternative to Sentry, LogRocket, Datadog and New Relic. Other open-source alternatives to Sentry include HyperDX, Traceway and Sentry.

Is Highlight.io actively maintained?

Yes. The most recent commit to Highlight.io was on 1 October 2026. The project has 9.4k stars on GitHub.

Highlight.io: open-source alternative to Sentry, LogRocket

About Highlight.io

Highlight, at highlight.io, is an open-source monitoring platform for developers. Its aim is to give teams one cohesive tool covering the front end and back end, instead of separate products for errors, logs and user sessions.

The core features are session replay, error monitoring and logging, with tracing and metrics also in scope. Console logs from the front end can be analyzed, and errors are embedded alongside the session in which they happened, so you can see what the user was doing beforehand. Session comments let teams discuss user frustration or bugs, there are integrations with other tools, and client SDKs install with a few lines of code.

You can sign up for the free-to-start hosted version at app.highlight.io, or deploy a hobby instance on Linux with Docker, sized at roughly 8 GB of memory, four CPUs and 64 GB of storage. The code is written in TypeScript and Go, and the repository lists the license as Other, so check the licence file for terms.

Key features

Session replay for user interactions
Error monitoring tied to sessions
Logging and console log analysis
Distributed tracing and metrics
Session comments for team discussion
Client SDKs for several platforms
Docker hobby self-hosting

Good fit for

→Reproducing user-reported bugs from replays
→Full-stack error and log monitoring
→Small teams wanting one monitoring tool

Built with: TypeScript; Go
Tags: monitoring; session-replay; error-monitoring; logging; tracing; observability; self-hosted; full-stack

Highlight.io: questions and answers

What is Highlight.io used for?: Highlight.io is an open-source full-stack monitoring platform that combines session replay, error monitoring, logging and distributed tracing, offered hosted or self-hosted. It is a good fit for reproducing user-reported bugs from replays, full-stack error and log monitoring, and small teams wanting one monitoring tool.
Is Highlight.io open source?: Yes. Highlight.io is open source under a custom licence. Its source code is on GitHub at highlight/highlight and is written mainly in TypeScript.
Is Highlight.io free?: Yes. Highlight.io is open source, so the software itself is free to use under the terms of its own licence. A managed cloud version is also available.
Can I self-host Highlight.io?: Yes. Highlight.io can be self-hosted on your own server or infrastructure.
What is Highlight.io an alternative to?: Highlight.io is an open-source alternative to Sentry, LogRocket, Datadog and New Relic. Other open-source alternatives to Sentry include HyperDX, Traceway and Sentry.
Is Highlight.io actively maintained?: Yes. The most recent commit to Highlight.io was on 1 October 2026. The project has 9.4k stars on GitHub.