Best Self Hosted Alternatives to Datadog Cloud Monitoring

Netdata is an open-source, agent-based observability platform that collects, stores, and visualizes per-second metrics across infrastructure and applications. It combines a lightweight edge agent, a tiered time-series store, and optional centralized Cloud/Parent components for unified views and collaboration. (netdata.cloud)

Key Features

• Per-second, real-time metrics collection with millisecond responsiveness and auto-generated dashboards. (raw.githubusercontent.com)
• Edge-based machine learning: unsupervised anomaly detection and per-metric ML models running on the agent. (raw.githubusercontent.com)
• Tiered, high-efficiency time-series storage (compact samples, ZSTD compression) with configurable retention and archiving. (raw.githubusercontent.com)
• Distributed Parent–Child streaming pipeline for horizontal scaling, multi-node aggregation, and long-term retention. (raw.githubusercontent.com)
• Broad integrations (800+ collectors) and export/archival targets including Prometheus, InfluxDB, OpenTSDB, and Graphite. (raw.githubusercontent.com)
• Low resource footprint (designed for minimal CPU/RAM impact) and zero-configuration auto-discovery on supported platforms. (raw.githubusercontent.com)

Use Cases

• Infrastructure and system monitoring: per-second visibility into CPU, memory, disks, network, sensors, and kernel metrics. (raw.githubusercontent.com)
• Container and Kubernetes observability: native containerd/Docker and Kubernetes integrations for pod, node, and cluster troubleshooting. (raw.githubusercontent.com)
• Incident troubleshooting and AIOps: anomaly detection, root-cause analysis, blast-radius identification, and automated reporting to accelerate incident resolution. (netdata.cloud)

Limitations and Considerations

• The Netdata UI and Netdata Cloud components are delivered as closed-source offerings while the Agent is open-source; organizations requiring fully open-source stacks should evaluate this split. (raw.githubusercontent.com)
• OpenTelemetry support is noted as "coming soon" in documentation; users relying heavily on OpenTelemetry may need to plan integrations or use exporters. (raw.githubusercontent.com)
• Feature parity varies by platform (Linux has the most comprehensive coverage); some platform-specific collectors or deep kernel metrics are not available everywhere. (raw.githubusercontent.com)

Netdata offers a high-resolution, low-overhead approach to full-stack monitoring with built-in ML and flexible scaling via Parents and Netdata Cloud. It is well-suited for teams needing real-time troubleshooting, container/Kubernetes visibility, and efficient time-series retention while weighing the tradeoffs of closed-source UI/cloud components.

Grafana is an open source observability and data visualization platform for querying, visualizing, and alerting on metrics, logs, and traces across many backends. It provides interactive dashboards and exploration workflows so teams can monitor systems and troubleshoot issues from a single interface.

Key Features

• Dashboards with flexible visualizations and templating for reusable views
• Explore workflows for ad-hoc querying and drilldowns across time ranges and data sources
• Unified alerting with rule evaluation and multi-channel notifications
• Pluggable data source and panel ecosystem to integrate with many metrics, log, and trace systems
• Sharing and collaboration features for teams (dashboards, annotations, and permissions)

Use Cases

• Infrastructure and Kubernetes monitoring using time-series backends
• Centralized log exploration and correlation with metrics for incident response
• Application observability by visualizing traces and service performance trends

Limitations and Considerations

• The experience and capabilities depend heavily on the chosen data sources and plugins
• Operating at very large scale can require careful tuning of storage backends and dashboard/query design

Grafana is well-suited for organizations that want a single “pane of glass” across diverse telemetry sources. Its extensible plugin model and alerting make it a common foundation for observability stacks in both homelabs and enterprise environments.

Prometheus is an open-source systems and service monitoring platform built around a time-series database. It collects metrics from instrumented targets, lets you query them with PromQL, and supports alerting based on rules.

Key Features

• Multi-dimensional time series data model using labels for flexible filtering and aggregation
• PromQL query language for ad-hoc analysis, dashboards, and alert conditions
• Pull-based metric scraping over HTTP with support for static configs and service discovery
• Alert rule evaluation with alert generation (commonly paired with Alertmanager)
• Federation support for hierarchical and cross-environment aggregation
• Remote write/read integrations for long-term storage and interoperability

Use Cases

• Monitoring Kubernetes clusters and cloud-native services via dynamic service discovery
• Application and infrastructure telemetry for SRE/DevOps dashboards and alerting
• Central metrics collection for microservices, batch jobs (via push gateway patterns), and exporters

Limitations and Considerations

• Built-in storage is optimized for a single-node TSDB; long-term retention and global scale typically require external remote storage integrations

Prometheus is a strong fit when you want a reliable, standards-based metrics platform with powerful querying and a broad ecosystem of exporters and integrations. It is widely used for cloud-native monitoring and alert-driven operations.

Glances is an open-source, cross-platform system monitoring tool designed as an alternative to tools like top/htop. It provides real-time insights into system resources and processes, and supports local or remote monitoring via terminal, web interface, and APIs.

Key Features

• Terminal-based dashboard showing CPU, memory, load, processes, disk I/O, network, filesystem, uptime, and system info
• Built-in web UI for monitoring from a browser on any device
• Client/server modes for remote monitoring, including discovery of available Glances servers
• RESTful JSON API and XML-RPC server for integrations and automation
• Pluggable architecture with plugins for sensors and hardware metrics (e.g., temperatures and fan speeds)
• Container monitoring support (notably Docker and Podman)
• Export metrics to external systems or files, including CSV and JSON outputs

Use Cases

• Monitoring a single server or workstation interactively from the terminal
• Remote monitoring of multiple machines via web UI or API integrations
• Exporting system metrics to external databases or monitoring pipelines

Limitations and Considerations

• Some functionality (web UI, specific plugins, exports) requires optional dependencies beyond the minimal installation

Glances fits well when you want a lightweight, interactive overview of system health while also enabling programmatic access and metric exports for broader observability workflows. Its cross-platform support makes it practical for mixed OS environments.

Grafana Loki is a horizontally scalable, highly available log aggregation system inspired by Prometheus. It stores logs efficiently by indexing only metadata labels for each log stream, rather than performing full-text indexing.

Key Features

• Label-based log indexing and querying aligned with Prometheus-style labels
• Horizontally scalable architectures (single binary or microservices) with multi-tenancy support
• Cost-efficient storage by keeping logs compressed and indexing only metadata
• Native integration with Grafana for exploration, dashboards, and correlation with metrics
• Multiple ingestion options via agents and clients (including Grafana Alloy and legacy Promtail)

Use Cases

• Centralized aggregation of Kubernetes and container logs with label-based filtering
• Incident investigation by correlating metrics and logs using shared labels
• Multi-team or multi-environment log collection with tenant isolation

Limitations and Considerations

• Not designed for full-text indexing; queries are primarily optimized around labels and structured metadata

Loki is a strong fit when you want an operationally simpler, Prometheus-like approach to logs with efficient storage and fast label-based queries. It is commonly deployed as part of a Grafana-centric observability stack for monitoring and troubleshooting.

SigNoz is an open-source observability platform designed to collect, store, and visualize logs, metrics, and traces in a single interface. Built on OpenTelemetry, SigNoz enables correlated signals and unified dashboards, with ClickHouse serving as the log datastore. (github.com)

Key Features

• Unified observability across logs, metrics, and traces
• OpenTelemetry-native ingestion with semantic conventions
• ClickHouse-backed log storage for fast queries
• DIY query builder, PromQL support, and flexible dashboards
• Alerts across signals with anomaly detection capabilities
• Tracing visuals including flamegraphs and detailed span views

Use Cases

• Instrumenting applications with OpenTelemetry to achieve end-to-end visibility across services
• Correlating logs, metrics, and traces to troubleshoot microservices and distributed systems
• Providing centralized observability for cloud-native environments with unified dashboards

Conclusion: SigNoz offers a single, OpenTelemetry-native platform to observe modern applications through correlated signals, scalable storage, and flexible visualization and alerting capabilities. It emphasizes openness, data correlation, and end-to-end debugging across logs, metrics, and traces.

Vector is an open-source, high-performance observability data pipeline for collecting, transforming, and routing logs and metrics. It is implemented as a single, memory-safe binary and supports agent, sidecar, and aggregator deployment modes. (vector.dev)

Key Features

• Built in Rust for memory safety and high throughput (single binary distribution).
• Programmable transforms using the Vector Remap Language (VRL) for flexible data enrichment and parsing.
• Wide list of first-class components: dozens of sources, transforms, and sinks (e.g., Kafka, S3, Elasticsearch, Prometheus integrations).
• GraphQL API with a built-in playground for inspecting topology, metrics, and live queries.
• Delivery and buffering guarantees designed for reliability in production pipelines.

(vector.dev)

Use Cases

• Centralize logs and metrics from heterogeneous systems and route them to vendors or long-term stores.
• Perform in-pipeline enrichment, filtering, and redaction to improve data quality and privacy before export.
• Replace or consolidate multiple agents/forwarders to reduce operational cost and complexity.

(github.com)

Limitations and Considerations

• Metrics support is marked as beta; traces are indicated as forthcoming, so full unified telemetry coverage may be incomplete for some users.
• Some advanced integrations and vendor-specific capabilities may require configuration tuning; large-scale deployments should validate topology and buffering settings for their workload.

(github.com)

Vector provides a compact, performant toolkit for observability pipelines focused on reliability, vendor neutrality, and powerful in-flight transforms. It is widely used in production and maintained by an active open-source community.

cAdvisor (Container Advisor) is a daemon that monitors running containers and the host machine to provide visibility into resource usage and performance characteristics. It collects, aggregates, processes, and exports container-level and machine-wide statistics.

Key Features

• Per-container metrics including CPU, memory, filesystem, and network statistics
• Historical resource usage with summaries and histograms
• Built-in web UI for interactive inspection of container and host metrics
• Versioned remote REST API for raw and processed stats
• Export support via storage plugins for external backends
• Works with Docker and is designed to support other container runtimes via a container abstraction model

Use Cases

• Monitoring container resource consumption on single hosts
• Feeding container metrics into an observability pipeline via supported exports
• Troubleshooting noisy-neighbor and resource isolation issues in container environments

Limitations and Considerations

• Accurate collection typically requires elevated access and visibility into host/container runtime paths and kernel interfaces
• Feature availability and metric detail can vary depending on container runtime and host OS configuration

cAdvisor is a practical foundation for container monitoring, offering both a lightweight UI for quick inspection and APIs/exports for integration into larger monitoring stacks. It is commonly deployed as a host-level daemon, including in orchestrated environments where per-node metrics are needed.

Beszel is a lightweight server monitoring platform built around a central hub and per-host agents. It collects historical system metrics and container statistics and presents them in a simple web interface with alerting.

Key Features

• Hub-and-agent architecture for monitoring multiple systems from a single dashboard
• Historical metrics for host resources (CPU, memory, disk usage and I/O, network, load)
• Docker and Podman container stats with per-container CPU, memory, and network history
• Configurable alerts for CPU, memory, disk, bandwidth, temperature, load average, and system status
• Multi-user support with admin sharing of monitored systems
• OAuth2/OIDC authentication with optional password-auth disablement
• Automatic backups with restore support, including S3-compatible storage targets
• REST API for integrating metrics and management into scripts and applications

Use Cases

• Homelab or small fleet monitoring with minimal resource overhead
• Tracking server and container performance trends over time
• Basic alerting for capacity and health signals (disk, bandwidth, temperature, uptime)

Beszel fits teams and individuals who want straightforward monitoring without the complexity of larger observability stacks. Its small footprint, container awareness, and built-in backups make it practical for self-managed environments.

VictoriaMetrics is a high-performance time series database designed for monitoring and observability workloads. It can act as long-term storage for Prometheus and integrates well with common metrics ecosystems such as Grafana.

Key Features

• Single-node and clustered deployment options
• Prometheus-compatible ingestion (including remote write) and querying, with support for PromQL and MetricsQL
• Multi-protocol ingestion support, including Graphite, InfluxDB line protocol, OpenTSDB, CSV, and JSON line formats
• High ingestion throughput and efficient storage compression for large cardinality metrics
• Stream aggregation for transforming and aggregating incoming metrics
• Built-in features for operational safety such as relabeling and cardinality limiting

Use Cases

• Cost-effective long-term storage backend for Prometheus metrics
• Centralized metrics ingestion from many sources (Kubernetes, IoT, APM) with unified querying
• High-volume telemetry storage and analytics where resource efficiency is critical

VictoriaMetrics is well-suited for teams that need a Prometheus-compatible TSDB with strong performance characteristics, flexible ingestion options, and scalable deployment models.

Scrutiny is a self-hosted web application for monitoring disk health by collecting SMART data from smartd and correlating it with real-world failure rates. It auto-detects connected drives, tracks SMART metrics over time, and provides a focused dashboard with configurable alerts.

Key Features

• Web UI dashboard focused on critical SMART metrics
• Integration with smartd for data collection (no re-invention of SMART parsing)
• Auto-detection of all connected drives
• Historical SMART metric tracking and trend visualization
• Thresholds informed by real-world drive failure data
• Temperature monitoring
• Docker-based deployment with an omnibus image (web + collector) and options for manual install
• Configurable alerting/notifications via Webhooks and other channels
• Hub/Spoke deployment support (separate web, collector, and storage components)

Use Cases

• Centralized monitoring of multiple disks in servers, NAS, or data centers
• Proactive maintenance through alerts when SMART attributes change
• Long-term health trend analysis to inform replacement cycles or capacity planning

Limitations and Considerations

• Scrutiny is a work-in-progress and may have rough edges or incomplete features
• Requires privileged access to host devices to query SMART data (e.g., capability flags for containers)
• Some RAID controllers or USB-docked drives may require manual configuration to expose SMART data

Conclusion

Scrutiny provides a focused, self-contained solution for monitoring disk health via SMART data, with flexible deployment options and alerting to help mitigate data-loss risk.

WatchYourLAN is a lightweight network IP scanner that continuously discovers devices on your local network using ARP scanning and presents results in a web interface. It helps you keep an inventory of hosts, track availability over time, and get notified when new devices appear.

Key Features

• Web GUI to view discovered hosts and their status
• New-host detection with notifications via Shoutrrr-supported channels
• Online/offline history tracking with configurable retention
• Host list/inventory for the scanned interfaces
• Optional metrics export via Prometheus endpoint and InfluxDB 2.x integration for Grafana dashboards
• Supports SQLite by default, with optional PostgreSQL storage
• Configurable via web UI, config file, or environment variables

Use Cases

• Detect unknown devices joining a home or office LAN
• Track device availability and troubleshoot intermittent connectivity
• Feed LAN device presence metrics into Prometheus/InfluxDB and visualize in Grafana

Limitations and Considerations

• No built-in authentication; access should be protected with a reverse proxy/SSO layer or network controls
• Requires ARP scanning capabilities and typically needs host networking to scan the LAN effectively

WatchYourLAN is a practical choice for lightweight LAN discovery and basic intrusion awareness, with a simple UI and integrations for notifications and observability stacks. It fits well in homelabs and small networks where continuous device monitoring is needed.

OneUptime is a self-hostable, open-source platform for monitoring and managing online services. It combines uptime monitoring, alerting and on-call, incident workflows, and customer-facing status pages, alongside broader observability capabilities.

Key Features

• Uptime and response-time monitoring for websites and APIs with alerting
• On-call scheduling and escalation policies
• Incident management workflows (creation, assignment, updates, postmortems)
• Public status pages to communicate outages and maintenance
• Logs management with search and analysis
• Application performance monitoring (metrics/traces-focused observability)
• Integrations and workflow automation with external tools

Use Cases

• Monitor production services and notify responders when availability or latency degrades
• Run a structured incident response process with on-call rotations and escalation
• Keep customers informed during outages via a hosted or self-managed status page

OneUptime is designed to replace multiple point solutions with a single integrated platform, helping teams reduce operational toil and respond to downtime more effectively.

Zabbix is an enterprise-class, open-source distributed monitoring and observability solution for tracking performance and availability across IT and OT environments. It collects metrics from agents and agentless sources and provides centralized visibility, alerting, and reporting.

Key Features

• Agent-based and agentless metric collection for servers, network devices, services, and applications
• Automatic discovery and template-based monitoring for rapid onboarding
• Real-time problem detection, correlation, and root-cause analysis workflows
• Flexible alerting and notifications with multiple delivery channels and integrations
• Dashboards and visualizations including graphs, maps, and topology views
• Distributed monitoring for remote sites and large environments, including multi-tenant use
• Built-in reporting, auditing, SLA calculations, and HTTP-based data streaming

Use Cases

• Infrastructure monitoring for networks, servers, virtual machines, and container platforms
• Application and service monitoring with proactive alerting and SLA tracking
• Centralized observability for multi-site or managed service provider environments

Zabbix is a mature, scalable platform suited for organizations that need deep visibility across diverse systems with strong alerting and flexible data collection options. It can serve as a unified monitoring backbone for both small deployments and large, distributed environments.

Pulse is a unified monitoring platform that brings Proxmox (VE/PBS/PMG), Docker/Podman, and Kubernetes visibility into a single dashboard. It combines real-time health, historical metrics, and alerting, with optional AI-assisted insights for troubleshooting and root-cause analysis.

Key Features

• Unified dashboard for nodes, VMs, containers, and Kubernetes workloads
• Agent-based monitoring with platform auto-detection
• Persistent metrics history with configurable retention
• Smart alerting with webhook-based notifications and integrations
• Proxmox-focused capabilities like backup visibility (PBS) and related infrastructure views
• Optional AI assistant features for natural-language querying and alert/finding analysis
• Security-oriented design including credential encryption at rest and scoped access
• SSO support via OIDC for centralized authentication

Use Cases

• Monitor a homelab or SMB stack running Proxmox plus Docker and/or Kubernetes
• Consolidate multiple hosts/clusters into a “single pane of glass” dashboard
• Reduce noisy alerting by correlating issues and investigating incidents faster

Pulse is well-suited for operators who want practical infrastructure monitoring without building a large, complex observability stack. Its unified agent and Proxmox-first focus make it particularly attractive for Proxmox-centric environments.

Dashdot is a modern server dashboard designed for smaller private servers. It provides a real-time overview of host metrics and system status via a polished glassy UI.

Key Features

• Real-time system metrics including CPU, memory, disk, and network usage presented in a responsive dashboard
• Web-based UI built with React and Node.js, designed for easy self-hosted deployment
• Docker-based quick-install with multi-architecture images (AMD64 and ARM)
• Lightweight, glassmorphism design with customizable widgets
• Comprehensive installation and configuration options documented on the official site
• Live demo available for exploration in the project’s official repository's demo

Use Cases

• Monitoring small private servers and home labs
• Observability of multiple VPS or private servers from a single dashboard
• Quick on-boarding for admins needing at-a-glance status of disks, networks, memory, and CPU

Limitations and Considerations

• The speed test feature can consume significant bandwidth; you can reduce impact by adjusting the speed test interval via an environment variable as described in the installation docs

Conclusion

Dashdot provides real-time server metrics through a modern, self-hosted dashboard. It can be deployed via Docker and explored via a live demo; official docs cover installation and configuration.

MySpeed is a speed test analysis service that automatically measures and records your internet connection performance over time. It stores results for up to 30 days and presents them in a clear web UI for tracking speed, ping, and related metrics.

Key Features

• Automated speed tests with configurable schedules using Cron expressions
• Visual statistics and history for download/upload speed, ping, and more
• Multiple configurable test servers per instance
• Supports different speed test providers including Ookla, LibreSpeed, and Cloudflare
• Health checks with notifications via email, Signal, WhatsApp, or Telegram
• Prometheus metrics support and Grafana-friendly monitoring integration
• Configurable data retention (up to 30 days)

Use Cases

• Monitor ISP performance and detect recurring slowdowns or instability
• Track connection quality changes after network equipment or plan upgrades
• Feed historical speed and latency metrics into monitoring dashboards and alerts

MySpeed is a practical choice for individuals and teams who want automated, historical visibility into internet performance with optional monitoring and alerting integrations.

Parseable is a full-stack observability platform built to ingest, analyze and extract insights from all types of telemetry (MELT) data. It can run locally, in the cloud, or as a managed service, providing a unified way to explore signals across the stack.

Key Features

• Unified signals across MELT data for a single source of truth
• Predictive analytics and anomaly forecasting to anticipate issues
• Natural language and SQL querying across telemetry
• Hybrid execution engine with columnar storage and indexing for fast queries
• Granular access control and federated IAM
• Open standards and vendor-neutral design (OTel, Parquet compatibility)
• Cloud-ready with BYOC options

Use Cases

• Full-stack observability of applications, databases, infrastructure and networks
• AI workloads observability for telemetry from AI models and LLMs
• Product observability to analyze user behavior, feature adoption, and performance

Conclusion Parseable provides predictive observability with a unified data model, enabling faster insights and proactive incident response across the full telemetry stack.

CheckCle is an open-source monitoring platform that provides real-time uptime, service and infrastructure monitoring, incident tracking, and alerts for full‑stack systems and applications. It combines a modern web UI with an embedded backend to offer status pages, distributed checks, and reports for operators and DevOps teams. (docs.checkcle.io)

Key Features

• Uptime and service monitoring for HTTP, DNS, Ping, and TCP-based services (API/SMTP/FTP etc.).
• Distributed regional checks and incident history (UP/DOWN/WARNING/PAUSE) with maintenance scheduling.
• SSL and domain monitoring (issuer, expiration date, days left, notifications).
• Infrastructure server monitoring (agent-based metrics for CPU, RAM, disk, network) with one-line agent install; Windows support listed as beta.
• Operational/public status pages, reports and analytics, and a web-based admin panel with user management, data retention and theme/language settings.
• Built for containerized deployment: Docker Compose and single-container run commands provided for quick installs. (github.com)

Use Cases

• DevOps and SRE teams needing an on‑premises/open‑source solution for uptime and incident tracking across services and regions.
• Small to medium organizations wanting self-hosted status pages and SSL/expiration monitoring without third‑party SaaS.
• Community projects, labs, or training environments that require a simple deployable monitoring stack with a web UI. (docs.checkcle.io)

Limitations and Considerations

• CheckCle uses an embedded PocketBase/SQLite datastore for persistence; this design simplifies deployment but can limit horizontal scaling and very high‑volume telemetry scenarios — plan backups and host volume persistence accordingly.
• Windows server/agent support is marked as beta in the documentation and may lack feature parity or production stability compared to Linux agents.
• Built‑in notification integrations are focused on email, Telegram, Discord and Slack; larger ecosystems or enterprise integrations may require custom work. (docs.checkcle.io)

In summary, CheckCle is a focused open‑source monitoring tool designed for teams that prefer a self‑hosted, container-friendly system with a React frontend and Go/embedded datastore backend. It is well suited for uptime, SSL, and server metric monitoring, with tradeoffs around embedded datastore scale and Windows agent maturity. (docs.checkcle.io)

LoggiFly is a lightweight log-monitoring service that watches container logs for predefined keywords or regular expressions and sends notifications when matches occur. It is designed for fast, targeted alerting on errors, security events, or application-specific log patterns across local and remote container hosts.

Key Features

• Plain text, regex, and multi-line log pattern detection
• Notifications via ntfy or Apprise (supports many notification providers) and optional custom endpoints
• Optional log attachments included with alerts for context
• Trigger container stop or restart on matched patterns to mitigate crash loops or critical errors
• Configuration via YAML, environment variables, or Docker container labels
• Automatic reload when configuration changes are detected
• Support for multiple remote hosts and compatible with Docker, Docker Swarm, and Podman

Use Cases

• Alert on suspicious activity such as repeated failed login attempts in service logs
• Notify on application crashes or critical exceptions with attached log context
• Automatically restart or stop a container when a known fatal error pattern appears

LoggiFly fits well in homelabs and production-like setups where simple, actionable log-based alerting is needed without running a full observability stack. It focuses on flexible matching, straightforward configuration, and reliable notifications.