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Highlight

ANALYTICS
Velocity0.0

Open-source full-stack monitoring with session replay and error tracking

www.highlight.io ↗

Highlight grew from session replay into SQL-driven observability, then went quiet in August 2025.

observabilitysession replayopentelemetrysql analyticsself-hosted
◆Current state
Highlight is an open-source observability stack covering session replay, errors, logs, traces and metrics. Its last tagged self-hosted release, docker-v0.5.6, shipped in August 2025 with session-replay performance fixes and session restarts. Nothing has been tagged since.
◆Where it's heading
Through 2025 the releases added OpenTelemetry metrics ingest, a SQL editor and builder for graphs, SQL alerts and dashboards created from log and trace views. That pushed Highlight from a replay tool toward a general telemetry platform. The cadence then slowed from roughly monthly to a two-month gap before stopping.
◆Prediction
The entries show no release in more than a year, so the self-hosted line's future is unclear. Any new tag would most likely be maintenance on session replay and OTel ingestion.

◆Recent moves

  1. 1y ago

    docker-v0.5.6: session replay performance and session restarts

    This release focuses on session replay: processing fixes, better replay performance and stability, and session restarts. It's the most recent tag and points back to the core replay product instead of the newer metrics surface.

    View source ↗
  2. 1y ago

    docker-v0.5.5: SQL alerts, log downloads, video in replays

    It adds SQL-based alerts, log downloads and inlining of remote video elements in replays. SQL alerts extend the query-first approach that started with the graphing editor.

    View source ↗
  3. 1y ago

    docker-v0.5.4: SQL joins and graphed error metrics

    The SQL layer gains joins for non-resource tables and window-expression fixes, and the error metrics page switches to graphs. It deepens the analytics surface added in January.

    View source ↗
  4. 1y ago

    docker-v0.5.3: dashboards and alerts from logs and traces

    Users can create dashboards and alerts straight from the logs and traces pages. It shortens the path from investigation to monitoring.

    View source ↗
  5. 1y ago

    docker-v0.5.2: OTel metrics in the web SDK

    The web SDK gains basic OpenTelemetry metrics and network-speed instrumentation, and the SQL builder handles more complex queries. Frontend telemetry now feeds the same metrics pipeline as the backend.

    View source ↗
  6. 1y ago

    docker-v0.5.1: SQL editor for graphs and OTel metrics export

    ⚡ SPARK

    This is where Highlight's direction turned: a SQL editor for graphing arrived alongside OpenTelemetry metrics export from the Python SDK. The releases that followed build on this query layer.

    View source ↗