Observability / APM
Highlight.io
LaunchDarkly
Full-stack OSS monitoring unifying session replay + errors + logs + traces, frontend-to-backend, for product engineers.
- Category
- Observability / APM
- License
- Open core
- Deployment
- SaaS or self-hosted
- Cost
- Low
- Free tier
- Yes
- Self-host effort
- Moderate
- Maturity
- Rising
- Popularity
- Solid OSS following; future tied to LaunchDarkly
The catch
The LaunchDarkly acquisition raises long-term direction questions (now part of a feature-flag platform); replay/frontend is the strength, deep backend APM less so.
Monitors
ServersLogsTracesRUM
Capabilities
Distributed tracingAlerting
Built for
Developers
Ownership
Acquired by LaunchDarkly (Mar 2025)