SigNoz

SigNoz is an open-source observability platform that unifies metrics, distributed traces, and logs in a single tool, built natively on OpenTelemetry. It gives engineering teams application performance monitoring (APM), distributed tracing, log management, infrastructure monitoring, and alerting — the "three pillars" of observability — without stitching together multiple vendors or paying per-host, per-seat prices. Positioned as an open-source, self-hostable alternative to Datadog and New Relic, SigNoz appeals to teams that want full-featured observability with data ownership and predictable, usage-based cost rather than the surprise bills that plague proprietary tools.

The platform is OpenTelemetry-first and full-stack. It ingests OTel data to provide APM (latency, error rates, throughput, service maps), end-to-end distributed tracing, centralized logs with fast querying, metrics and dashboards, and alerting — all correlated in one UI so you can jump from a slow trace to the related logs and metrics. SigNoz adds exceptions tracking, custom dashboards, and, importantly, a pricing model that does not charge per host or per user (so you can add unlimited team members and monitor any number of hosts on the base plan). It can be self-hosted for free (open source) or run as SigNoz Cloud.

SigNoz serves engineering and DevOps teams that want open-source, OpenTelemetry-native observability without per-host/per-seat pricing. The Community edition is free to self-host. SigNoz Cloud starts at a Teams plan around $49/month (including usage worth $49, then metered: logs/traces $0.30/GB, metrics $0.10 per million samples), with a Startup Program at $19/month for eligible companies, and an Enterprise plan from around $4,000/month (data residency, compliance, dedicated support). It competes with Datadog, New Relic, Grafana, and Better Stack, differentiating on open-source, OTel-native observability with no per-seat or per-host fees.