Infrastructure monitoring, logs, and tracing in one platform
CompanyDatadog
Since2010
PricingPaid
Datadog's value is correlation. A latency spike on a dashboard, the traces behind it, and the logs from the affected hosts are one or two clicks apart, which is the difference between a ten minute incident and an hour.
Error tracking and performance monitoring for applications
CompanyFunctional Software
Since2012
PricingFreemium
Sentry is the tool most teams install first and remove last. An unhandled exception arrives with a stack trace, the release that introduced it, the users affected, and the breadcrumbs leading up to it.
Application performance monitoring with usage based pricing
CompanyNew Relic
Since2008
PricingFree
New Relic was the application performance monitoring product for a generation of web applications, and its repricing to per-user plus per-gigabyte was an explicit attempt to answer the complaint about host based billing.
Real-time infrastructure monitoring with per-second metrics and alerts
Stars80.9K
Commitjust now
LicenseGPL-3.0
Netdata is a self-hosted monitoring agent that collects per-second metrics from systems, containers, and applications, with built-in dashboards, alerts, and anomaly detection.
Self-hosted uptime monitoring with a clean status page
Stars76.4K
Commit4d ago
LicenseMIT
Uptime Kuma monitors HTTP endpoints, TCP ports, containers, and certificates, and notifies through almost a hundred channels. Setup is a container and a few minutes.
Grafana is the visualisation layer that sits above other systems rather than a monitoring stack of its own. It queries Prometheus, Loki, PostgreSQL, ClickHouse, and dozens of other sources, and puts them on the same dashboard.
Open-source LLM observability, evals, and prompt management
Stars35.3K
Commitjust now
LicenseMIT
Langfuse is an open-source platform for tracing, evaluating, and improving LLM applications and AI agents, with prompt management and experiments built in.
Open-source vulnerability scanner with template-powered detection
Stars32K
Commitjust now
LicenseMIT
ProjectDiscovery is an open-source vulnerability scanner built on the Nuclei YAML template engine that finds exploitable issues across apps, APIs, networks, DNS, and cloud.
Open time-series database for metrics, events, and IoT telemetry
Stars31.8K
Commitjust now
LicenseApache-2.0
InfluxDB is an open time-series database for metrics, events, and IoT telemetry, queried with SQL and InfluxQL and run self-managed or as a managed cloud.
High-performance open-source time-series database for Industrial IoT
Stars25.2K
Commitjust now
LicenseAGPL-3.0
TDengine is an open-source, cloud-native time-series database for IoT and industrial workloads, with built-in caching, stream processing, and data subscription in one platform.
TimescaleDB is a PostgreSQL extension for high-performance real-time analytics on time-series and event data, available self-hosted and as managed Tiger Cloud.
Open-source observability for logs, metrics, traces and RUM in one binary
Stars22.3K
Commitjust now
LicenseAGPL-3.0
OpenObserve is an open-source observability platform that unifies logs, metrics, traces, RUM and AI model telemetry in one Rust binary backed by object storage.
Fast, cost-effective open-source time-series database and monitoring
Stars17.9K
Commitjust now
LicenseApache-2.0
VictoriaMetrics is an open-source time-series database and monitoring solution that ingests Prometheus, InfluxDB, OpenTelemetry and Graphite data and queries it with PromQL-compatible MetricsQL.
Apache 2.0 search and analytics suite with AI-ready retrieval
Stars13.8K
Commitjust now
LicenseApache-2.0
OpenSearch is an Apache 2.0 search and analytics suite for ingesting, searching, visualizing, and analyzing data at scale, with vector search for AI applications.
Open-source AIOps for alert correlation, deduplication, and automated remediation
Stars12.4K
Commitjust now
LicenseMIT
Keep is an open-source AIOps platform that aggregates alerts from 90+ providers, deduplicates them with AI, and automates remediation via YAML or visual workflows.