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Better StackUptime Monitoring & Status PagesBetter Stack is a hosted platform for uptime monitoring, on-call alerting, incident management, status pages, logs, traces, metrics, error tracking and an AI SRE agent, with a free tier and usage-based telemetry pricing.CommercialWeb platformFreemium
DatadogMonitoring & ObservabilityDatadog is a SaaS observability and security platform that collects metrics, traces, logs and events through its open-source Agent and 1,000+ integrations, with per-host and per-volume pricing across regional sites.CommercialWeb platformPaid
Highlight.ioMonitoring & ObservabilityHighlight.io is an open-source monitoring platform for session replay, error monitoring, logs and traces. LaunchDarkly acquired Highlight in April 2025; the hosted service ended on February 28, 2026, while the repository stays open.Open sourceSelf-hosted
New RelicMonitoring & ObservabilityNew Relic is a hosted observability platform that collects metrics, events, logs and traces from agents and OpenTelemetry. Pricing is usage-based on data ingest and users or compute, with a free tier of 100 GB per month.CommercialWeb platformFreemium
OneUptimeUptime Monitoring & Status PagesOneUptime is an open-source observability platform from HackerBay, Inc. that combines uptime and infrastructure monitoring, status pages, incident management, on-call paging and OpenTelemetry logs, metrics and traces, as a cloud service or self-hosted.Open sourceSelf-hostedFreemium
OpenObserveMonitoring & ObservabilityOpenObserve (O2) is an AGPL-3.0 observability platform written in Rust for logs, metrics, traces, RUM, dashboards, alerts, pipelines and LLM observability, self-hosted as a single binary or HA cluster, or used as a cloud service.Open sourceSelf-hostedFreemium
SentryMonitoring & ObservabilitySentry is a Fair Source debugging platform that groups errors into issues and adds traces, logs, session replays, profiles, cron and uptime monitors. It runs as the sentry.io service with US or EU storage, or self-hosted with Docker Compose.CommercialSelf-hostedFreemium
UptraceMonitoring & ObservabilityUptrace is an AGPL-3.0 observability platform that ingests OpenTelemetry traces, metrics and logs into ClickHouse, with dashboards, SQL and PromQL-like queries, alerting, incidents and SLOs. Self-hosted editions and a usage-billed cloud.Open sourceSelf-hostedFreemium