Highlight.io

Open-source replay + errors, self-host

FreeMonitoring & error trackinghighlight.io

What it is

An open-source full-stack monitoring app combining session replay, error monitoring, logging and OpenTelemetry tracing in one self-hostable Docker stack. LaunchDarkly acquired it and folded the features into LaunchDarkly Observability. The GitHub repo remains public and actively committed to, but the hosted app.highlight.io service has shut down.

Why it earns a slot

It is now purely a self-host play: if you want replay plus errors plus traces on your own hardware with no per-event bill, this is one of very few Apache-2.0 options.

Know before you commit

Do not plan around the cloud product. It ended on 28 February 2026 and SDK snippets had to be repointed at LaunchDarkly before 1 March 2026. Self-hosting means operating ClickHouse, Kafka and Postgres yourself.

Getting started

git clone https://github.com/highlight/highlight && docker compose up

Field notes

0 from the community

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Field check

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Pricing snapshot

Self-hosting is free under Apache 2.0. The hosted cloud ended 28 February 2026 and existing users were migrated to LaunchDarkly Observability.

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Highlight.io (https://www.highlight.io) for this project, then use it only if it fits what we are already building.
Context: Open-source replay + errors, self-host. An open-source full-stack monitoring app combining session replay, error monitoring, logging and OpenTelemetry tracing in one self-hostable Docker stack. LaunchDarkly acquired it and folded the features into LaunchDarkly Observability. The GitHub repo remains public and actively committed to, but the hosted app.highlight.io service has shut down.
Reviewer notes (general, not written for this codebase): It is now purely a self-host play: if you want replay plus errors plus traces on your own hardware with no per-event bill, this is one of very few Apache-2.0 options.
Watch out for: Do not plan around the cloud product. It ended on 28 February 2026 and SDK snippets had to be repointed at LaunchDarkly before 1 March 2026. Self-hosting means operating ClickHouse, Kafka and Postgres yourself.
Pricing: Self-hosting is free under Apache 2.0. The hosted cloud ended 28 February 2026 and existing users were migrated to LaunchDarkly Observability.
Setup: git clone https://github.com/highlight/highlight && docker compose up
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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Neighbourhood

How Highlight.io sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.

Instead of thisAxiom Better Stack BugSnag (Insight Hub)Checkly Cronitor Datadog Grafana Cloud LogRocket Sentry

Pairs well withRefero Styles

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