Checkmk may suit teams monitoring servers, networks, cloud environments, or hybrid infrastructure.
Free plan Free trial Open source From $275 a month, billed yearly AndroidiPhone & iPadWebWindowsMacLinux+2
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Best Monitoring Observability 2026
Facts read 19 Sep 2026 – 15 Oct 2026
Monitoring observability tools help you view metrics, logs, traces and alerts for software and services. This list helps buyers compare monitoring coverage, deployment choices and data retention.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Checkmk | Checkmk may suit teams monitoring servers, networks, cloud environments, or hybrid infrastructure. | 6.8 | $275 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 02 Grafana Cloud Application Observability | This service suits software engineers who need to detect application anomalies, investigate causes, and fix problems. | 6.3 | $0.03 usage-based | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 03 Nagios XI | It suits organizations that can operate a Linux server and want to monitor infrastructure under configured thresholds. | 6.0 | $2,595 one-time | Free plan | Web, Windows, Mac, Linux | 15 Oct 2026 |
| 04 SigNoz | SigNoz suits teams monitoring application and infrastructure telemetry across logs, metrics, traces and exceptions. | 5.9 | $19 a month | Free plan | Android, iPhone & iPad, Web, API | 1 Oct 2026 |
| 05 Icinga | Icinga is aimed at teams of any size that need infrastructure and application monitoring, including distributed environments. | 5.8 | $2,000 a year | Free plan | Web, Windows, Linux, API | 4 Oct 2026 |
| 06 Better Stack | It suits teams coordinating incident response, on-call work, monitoring, and telemetry. | 5.7 | $29 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, API | 28 Sep 2026 |
| 07 VictoriaMetrics | VictoriaMetrics may suit teams needing metrics monitoring and longer-term metrics storage across on-premises, hybrid, or cloud deployments. | 5.7 | $200 a month | Free plan | Web, Windows, Mac, Linux | 3 Oct 2026 |
| 08 groundcover | groundcover suits teams monitoring production environments that want telemetry collection through an eBPF sensor and a choice of cloud-managed or on-premises deployment. | 5.6 | $30 a month | Free plan | Web, Linux, Self-hosted | 28 Sep 2026 |
| 09 Honeycomb | Honeycomb may suit individuals testing observability or teams debugging production applications with telemetry. | 5.5 | $150 a month | Free plan | Android, iPhone & iPad, Web, API | 29 Sep 2026 |
| 10 Observe | 5.2 | — | Free trial | Web, Windows, Mac, Linux | 3 Oct 2026 |
Entries are ordered with newer releases before older ones, using figures published by makers. The page does not apply a score.
02
Grafana Cloud Application Observability
This service suits software engineers who need to detect application anomalies, investigate causes, and fix problems.
AndroidiPhone & iPadWeb+5 Record6.3 Visit
03
Nagios XI
It suits organizations that can operate a Linux server and want to monitor infrastructure under configured thresholds.
WebWindowsMac+3 Record6.0 Visit
04
SigNoz
SigNoz suits teams monitoring application and infrastructure telemetry across logs, metrics, traces and exceptions.
AndroidiPhone & iPadWeb+2 Record5.9 Visit
05
Icinga
Icinga is aimed at teams of any size that need infrastructure and application monitoring, including distributed environments.
WebWindowsLinux+2 Record5.8 Visit
6
Better Stack
AndroidiPhone & iPadWeb+1 $29 a month, billed yearly Record5.7 Visit It suits teams coordinating incident response, on-call work, monitoring, and telemetry.
7
VictoriaMetrics
WebWindowsMac+3 $200 a month Record5.7 Visit VictoriaMetrics may suit teams needing metrics monitoring and longer-term metrics storage across on-premises, hybrid, or cloud deployments.
8
groundcover
WebLinuxSelf-hosted $30 a month Record5.6 Visit groundcover suits teams monitoring production environments that want telemetry collection through an eBPF sensor and a choice of cloud-managed or on-premises deployment.
9
Honeycomb
AndroidiPhone & iPadWeb+2 $150 a month Record5.5 Visit Honeycomb may suit individuals testing observability or teams debugging production applications with telemetry.
11
Scout APM
WebAPI $10 a month Record5.2 Visit Scout suits engineering teams monitoring applications built with its listed language agents.
13
AppSignal
WebAPI $279 a year Record5.0 Visit AppSignal suits developers monitoring application errors, performance, logs, and traces across its supported languages.
14
Axiom
WebAPI $25 a month Record5.0 Visit Axiom’s Personal plan is intended for individual developers and small projects.
15
Elastic Observability
WebWindowsMac+3 Free plan Record5.0 Visit It suits teams that want to analyze application and infrastructure telemetry together, using OpenTelemetry or other vendor-neutral instrumentation.
16
Jaeger
WebWindowsMac+3 Free plan Record5.0 Visit Jaeger suits engineering teams troubleshooting distributed systems with trace data, dependency views, performance metrics, and configurable sampling.
17
Zabbix
WebWindowsMac+3 Free plan Record4.9 Visit Zabbix suits teams monitoring infrastructure, applications, networks, or services across a range of operating systems and data sources.
18
Prometheus
WebWindowsMac+2 Free plan Record4.8 Visit Prometheus suits teams that need to collect and query system metrics or set up alerts.
19
ManageEngine Applications Manager
AndroidiPhone & iPadWeb+2 $395 a year Record4.4 Visit It may suit teams monitoring applications and infrastructure in a hybrid deployment.
20
New Relic Session Replay
AndroidiPhone & iPadWeb $10 a month Record4.2 Visit It may suit teams seeking session replay alongside platform tools for metrics, logs, traces, and events.
Before you choose
Choose the signals to compare
The comparison places metrics monitoring, log management, distributed tracing and alerting side by side. Synthetic monitoring is another field in the comparison, useful when checks from outside a service matter.
Check free access and pricing
Check each entry for a free plan, a free trial or paid access. Before deciding, note each entry’s paid-from amount, billing interval and trial duration.
Pricing notes can use monthly rates, usage rates or pricing on request, so compare the pricing format as well as the amount.
Choose a deployment model
Listed entries run on web, API, Linux, Windows, macOS or self-hosted platforms. Pick a model that fits where you run services and where you want observability data to stay.
Review code access and retention
Open-source code is available from entries in this category. If you need to read or change the code, review its licence and deployment requirements.
Compare data retention with the time you need to investigate incidents and review service history.
Questions
Do tools in this category offer free plans?
The list includes free-plan and paid offerings. Check each entry’s pricing note before deciding.
Can I try a tool before paying?
A free trial is offered by tools on this list. Trial lengths vary by product, including 14-day, 15-day and 30-day offers in the listed notes.
Which platforms do these tools support?
The listed platforms are web, API, Linux, Windows, self-hosted and macOS.
What observability features can I compare?
You can compare metrics monitoring, log management, distributed tracing, alerting, synthetic monitoring, deployment model and data retention.
Is open-source code available?
Check each entry for open-source availability, then review the applicable licence and deployment terms before adopting one.
How is paid pricing shown?
Listed pricing notes include monthly rates, usage rates and pricing on request. Check the billing period and unit beside the paid-from figure.
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