20 Best Open Source New Relic Alternatives in 2026

1

Netdata

Real-time monitoring for servers, containers, and applications.

Netdata is a real-time monitoring tool with per-second metrics, zero-configuration dashboards, intelligent alerting, and extensibility for servers, containers, and distributed systems.

Pricing: Free and open source agent; paid cloud and enterprise plans for centralized features.

• Zero-configuration real-time dashboards
• Wide auto-discovery of services
• Very active community
• Centralized features and retention may need paid cloud plans
• Less flexible for custom long-term analytics than Prometheus

2

Grafana

Open-source dashboards for observability and operational analytics.

Grafana is an AGPL-3.0 visualization platform for metrics, logs, traces, SQL data, alerts, variables, plugins, and embedded dashboards. It can also display business data but is not a complete Power BI replacement.

Pricing: Open-source core is self-hostable; enterprise and hosted offerings may be paid.

• Real-time dashboards
• Metrics, logs, traces, and alerting
• Large datasource and plugin ecosystem
• Primarily observability-focused
• Less suited to traditional corporate reporting
• Semantic modeling is less central

3

Prometheus

Pull-based metrics monitoring with PromQL.

Prometheus is a CNCF graduated monitoring system with a multi-dimensional data model, PromQL queries, built-in alerting, service discovery, and a local time series database, and it is the de facto metrics standard for Kubernetes.

Pricing: Free and open source.

• Industry standard for cloud-native metrics
• PromQL, alerting, and service discovery
• Huge ecosystem of exporters
• Metrics only: logs and traces need other tools
• No built-in long-term storage or UI beyond basics

4

SigNoz

OpenTelemetry-native observability for metrics, traces, and logs.

SigNoz is an all-in-one observability platform for microservices that combines metrics, distributed tracing, and logs with dashboards and alerts, built on OpenTelemetry. The repository is MIT outside its ee directories, which are under a separate license.

Pricing: Free self-hosted community edition; paid cloud and enterprise plans.

• Metrics, traces, and logs in one OpenTelemetry-based tool
• Active development
• Lower cost than proprietary APM
• Open core with enterprise features under a separate license
• Needs resources to operate at scale

5

ProjectDiscovery

Open-source vulnerability scanning and attack surface tools.

ProjectDiscovery builds open-source security tools such as Nuclei, a template-based vulnerability scanner, alongside a hosted platform for asset discovery and vulnerability management. It covers security scanning rather than application performance monitoring.

Pricing: Free open-source tools; the hosted platform is paid.

• Template-based vulnerability scanning with Nuclei
• Large community of templates
• MIT-licensed core tools
• Security tooling, not infrastructure or APM monitoring
• The managed platform is a separate hosted service

6

Apache SkyWalking

APM and observability platform for distributed systems.

Apache SkyWalking provides distributed tracing, metrics, logs, and profiling with eBPF support, alerting, RBAC, and agents for many languages, aimed at complex cloud-native systems and microservices.

Pricing: Free and open source.

• Tracing, metrics, logs, and profiling in one
• Agents for 10+ languages and eBPF
• Apache Software Foundation project
• Complex to operate
• Interface less polished than commercial APMs

7

OpenReplay

Self-hosted session replay and product analytics.

OpenReplay is a self-hostable session replay and product analytics platform with co-browsing, heatmaps, and error tracking. It is AGPL-3.0 with an ee directory, and enterprise features such as SSO are in its paid editions. Self-hosting in production is free.

Pricing: Free to self-host; cloud and enterprise plans are paid.

• Session replay with co-browsing and heatmaps
• Self-hosting for data control
• Active development
• Enterprise features are paid
• Heavy to run at scale

8

HyperDX

Observability platform for logs, traces, metrics, and session replay.

HyperDX is an MIT-licensed observability platform that combines logs, traces, metrics, errors, and session replays in one interface, built on ClickHouse and OpenTelemetry, with a hosted option billed by data volume.

Pricing: Free to self-host; the hosted service is usage-based.

• Logs, traces, metrics, and replay in one tool
• OpenTelemetry-based
• MIT license
• Heavier to run than an uptime monitor
• Not focused on simple uptime checks

9

Coroot

eBPF observability with metrics, logs, traces, and profiling.

Coroot is an Apache-2.0 observability platform that uses eBPF to collect metrics, logs, traces, and profiles with no code changes, with service maps and AI-assisted root cause analysis. A free Community Edition is available and enterprise features are paid.

Pricing: Free Community Edition; enterprise features are paid.

• Zero instrumentation
• Service maps
• Kubernetes rollout tracking
• Some features are enterprise-only
• Linux and eBPF dependent

10

OpenLLMetry

OpenTelemetry instrumentation for LLM applications.

OpenLLMetry is an Apache-2.0 set of OpenTelemetry-based instrumentation libraries for LLM applications, built and maintained by Traceloop. It adds tracing for LLM providers, vector databases, and frameworks with a couple of lines of code and sends data to any OpenTelemetry-compatible backend, so it is not a dashboard by itself.

Pricing: Free and open source; Traceloop offers a paid platform.

• Built on OpenTelemetry standards
• Works with any compatible backend
• Apache-2.0 license
• A library, not a full observability UI
• You must choose and run a backend

11

GreptimeDB

Cloud-native database for metrics, logs, and traces.

GreptimeDB is a cloud-native observability database unifying metrics, logs, and traces with SQL, PromQL, and streaming support, sub-second queries, OpenTelemetry-native ingestion, and deployment from ARM edge devices to the cloud.

Pricing: Free open source; managed cloud pricing available.

• Unified storage for all telemetry signals
• SQL and PromQL queries
• Efficient at petabyte scale
• A database, not a full monitoring UI
• Younger ecosystem

12

Helicone

Open-source LLM observability and gateway.

Helicone is an open-source platform for logging, monitoring, and debugging LLM applications through a proxy, with request logging, cost and latency tracking, caching, routing, a prompt playground, and datasets, under Apache-2.0. A production Helm chart is available for enterprise workloads on request.

Pricing: Free to self-host; hosted plans are paid.

• Drop-in proxy with cost and latency tracking
• Prompt playground, caching, and datasets
• Apache-2.0 license
• Proxy-based setup adds a network hop
• The enterprise Helm chart is not public

13

Pydantic Logfire

Python-focused observability from the Pydantic team.

Pydantic Logfire is an observability platform for logs, traces, and profiling with strong Python integration and OpenTelemetry support. The repository contains the open-source SDK and documentation, while the server application is closed source and offered as a hosted service.

Pricing: SDK is free; the hosted platform has its own pricing.

• Excellent Python and OpenTelemetry integration
• Structured, readable traces
• MIT-licensed SDK
• The server is closed source and not self-hostable
• Not a full open-source alternative

14

Uptrace

OpenTelemetry APM for traces, metrics, and logs.

Uptrace is an open-source APM that integrates traces, metrics, and logs through OpenTelemetry, with a service graph, RED metrics, and support for many languages. It can be self-hosted or used as a managed cloud.

Pricing: Free self-hosted; cloud has a free tier and pay-per-usage plans.

• All-in-one OpenTelemetry APM
• Service graph and RED metrics
• Vendor-agnostic
• AGPL-3.0 license
• Smaller community than SigNoz or Grafana

15

Checkmk

IT infrastructure monitoring with automated discovery.

Checkmk is IT infrastructure monitoring with 2,000+ plugins, automated discovery and configuration, granular alerting, and dashboards. The Raw Edition is open source, and Enterprise, Cloud, and MSP editions are commercial.

Pricing: Free Raw Edition; paid Enterprise, Cloud, and MSP editions.

• 2,000+ vendor plugins and automated discovery
• High-performance core
• Strong for large infrastructures
• Some features are limited to paid editions
• Traditional monitoring model

16

Elementary

dbt-native data observability.

Elementary is an Apache-2.0 data observability tool built around dbt that monitors pipelines and data quality. It covers data pipelines only, not application performance monitoring.

Pricing: Free open-source package; cloud is paid.

• Fits dbt workflows
• Data quality monitoring
• Apache-2.0
• Data pipelines only
• Not an APM tool

17

Icinga

Flexible monitoring for networks, servers, and cloud.

Icinga is a monitoring platform with real-time checks, custom check configurations, fast alerting, multi-tenancy, and high availability for on-premises, cloud, and hybrid environments.

Pricing: Free; commercial support available.

• Flexible checks and high availability
• Scales to complex environments
• Active community
• Configuration-heavy
• Dated compared with modern observability stacks

18

Bugsink

Self-hosted error tracking compatible with Sentry SDKs.

Bugsink is a self-hosted error tracking tool compatible with Sentry SDKs, with real-time error details and scalable performance. It is source available under the PolyForm Shield License, which restricts offering it as a competing service.

Pricing: Free to self-host.

• Works with existing Sentry SDKs
• Lightweight self-hosting
• Actively maintained
• Source available, not standard open source
• Error tracking only

19

Maple

OpenTelemetry and ClickHouse observability with an MCP server.

Maple is an observability platform built on OpenTelemetry and ClickHouse for traces, logs, and metrics, with session replay, service maps, error tracking, alerting, and an MCP server for AI agent diagnostics. It is licensed under FSL-1.1, which converts to Apache-2.0 two years after each release.

Pricing: Free local mode in a single binary; hosted plan from $39 per month.

• Single binary for local use with embedded ClickHouse
• MCP server for AI agents
• Traces, logs, metrics, and session replay
• Source available, not OSI-approved open source
• Young project

20

GlitchTip

Open-source error tracking compatible with Sentry SDKs.

GlitchTip is a self-hostable error tracking tool compatible with Sentry SDKs, with performance monitoring, uptime monitoring, logs, and email and webhook alerts. Development happens on GitLab.

Pricing: Free self-hosted; hosted plans with a free tier.

• Sentry SDK compatible with a lighter footprint
• MIT license
• Error, performance, and uptime monitoring
• Smaller feature set than Sentry
• Development is on GitLab, so GitHub metrics do not apply