📟 monitoring

SolarWinds costs $35/mo.
These cost $0.

8 free alternatives to SolarWinds, checked for license, recent activity and real adoption. Each one tells you the catch, so you can switch with your eyes open.

⚡ Quick Verdict · 2027 Guide

The top-rated free, open-source replacement for SolarWinds is NetData (Open Source Open Source). Across this category, 8 self-hostable tools are available (including NetData and Prometheus). Switching a 5-person team saves up to $2,100/year compared to SolarWinds's $35/mo subscription.

The catch: Requires self-hosting setup, updates, and server maintenance compared to managed SolarWinds.

See the 8 picks ↓

SolarWinds vs Free Alternatives

Quick side-by-side comparison · $0/mo vs $35/mo

Alternative	Type	License	Where It Runs	Stars	Head-to-Head
NetData	open source	Open Source	Self-host	★ 81.3k	SolarWinds vs NetData →
Prometheus	open source	Open Source	Self-host	★ 67.3k	SolarWinds vs Prometheus →
OpenObserve	open source	AGPL-3.0	Self-host	★ 22.9k	SolarWinds vs OpenObserve →
Scanopy	open source	Open Source	Self-host	★ 5.9k	SolarWinds vs Scanopy →
Zabbix	open source	Open Source	Self-host	★ 6.5k	SolarWinds vs Zabbix →
Checkmk	open source	GPL-2.0	Self-host	★ 2.6k	SolarWinds vs Checkmk →
Icinga	open source	Open Source	Self-host	★ 2.2k	SolarWinds vs Icinga →
Nagios	open source	Open Source	Self-host	★ 2.1k	SolarWinds vs Nagios →

The picks

8 open source · ranked by fit

01
NetData
open sourceOpen SourceSelf-host
81.3knov 2026
Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.
The catch vs SolarWinds
Requires self-hosting setup, updates, and server maintenance compared to managed SolarWinds.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/netdata/netdata or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit netdata.cloud ↗Source Compare vs SolarWinds →also replaces 7 other apps →
02
Prometheus
open sourceOpen SourceSelf-host
67.3knov 2026
Pull-based monitoring system with a multi-dimensional data model, PromQL query language, built-in alerting, and a time series database built for cloud native environments.
The catch vs SolarWinds
Requires self-hosting setup, updates, and server maintenance compared to managed SolarWinds.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/prometheus/prometheus or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit prometheus.io ↗Source Compare vs SolarWinds →also replaces 2 other apps →
03
OpenObserve
open sourceAGPL-3.0Self-host
22.9knov 2026
Monitor logs, metrics, and traces with an open-source observability platform. Achieve petabyte scale with 140x lower storage costs and high performance.
The catch vs SolarWinds
It can ingest and search logs cheaply, but you must operate storage and collectors and give up Axiom's managed serverless scaling and polished event-query experience.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Hosted signup, or a single binary/Docker container; Helm plus external services for HA
setup
The easy single-node path still needs collectors and persistent storage; production HA adds Kubernetes, object storage, PostgreSQL, and NATS.
your data
Telemetry is stored as Apache Parquet on local disk or object storage; single-node metadata defaults to SQLite, while HA uses PostgreSQL and NATS.
checked
2026-11-07
Visit openobserve.ai ↗Source Compare vs SolarWinds →also replaces 14 other apps →
04
Scanopy
open sourceOpen SourceSelf-host
5.9knov 2026
Discovers your network via SNMP, LLDP, and ARP, then builds and maintains L2/L3 topology diagrams, host inventories, and service dependency maps automatically.
The catch vs SolarWinds
Requires self-hosting setup, updates, and server maintenance compared to managed SolarWinds.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/scanopy/scanopy or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit scanopy.net ↗Source Compare vs SolarWinds →also replaces 4 other apps →
05
Zabbix
open sourceOpen SourceSelf-host
6.5knov 2026
Monitors networks, servers, cloud services, IoT, and OT environments with no per-device licensing fees, available self-hosted or as a managed SaaS platform.
The catch vs SolarWinds
Requires self-hosting setup, updates, and server maintenance compared to managed SolarWinds.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/zabbix/zabbix or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit zabbix.com ↗Source Compare vs SolarWinds →also replaces 5 other apps →
06
Checkmk
open sourceGPL-2.0Self-host
2.6knov 2026
Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.
The catch vs SolarWinds
Requires self-hosting setup, updates, and server maintenance compared to managed Prtg.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/tribe29/checkmk or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit checkmk.com ↗Source Compare vs SolarWinds →also replaces 8 other apps →
07
Icinga
open sourceOpen SourceSelf-host
2.2knov 2026
Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.
The catch vs SolarWinds
Requires self-hosting setup, updates, and server maintenance compared to managed SolarWinds.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/icinga/icinga2 or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit icinga.com ↗Source Compare vs SolarWinds →also replaces 6 other apps →
08
Nagios
open sourceOpen SourceSelf-host
2.1knov 2026
Free open source IT monitoring solution for servers, networks, and applications. Trusted by 1M+ users worldwide with powerful alerting and enterprise-grade features.
The catch vs SolarWinds
Requires self-hosting setup, updates, and server maintenance compared to managed SolarWinds.
Install, platforms & data +
platforms
webself-hosteddocker to self-host
install
Clone https://github.com/nagiosenterprises/nagioscore or deploy with Docker Compose
setup
Deploy via Docker or binary release from GitHub and configure environment variables.
your data
All application data and configuration live on your own server or local database.
checked
2026-11-07
Visit nagios.org ↗Source Compare vs SolarWinds →also replaces 6 other apps →

SolarWinds Head-to-Head Comparisons (2027)

Side-by-side trade-off breakdowns · 8 free alternatives

SolarWinds vs NetDataOpen Source · Self-host →

SolarWinds vs PrometheusOpen Source · Self-host →

SolarWinds vs OpenObserveAGPL-3.0 · Self-host →

SolarWinds vs ScanopyOpen Source · Self-host →

SolarWinds vs ZabbixOpen Source · Self-host →

SolarWinds vs CheckmkGPL-2.0 · Self-host →

SolarWinds vs IcingaOpen Source · Self-host →

SolarWinds vs NagiosOpen Source · Self-host →

Frequently Asked Questions

Direct answers · SolarWinds open-source replacements

What is the best free alternative to SolarWinds?+

The top free alternative to SolarWinds is NetData (open source, Open Source). Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts. Other popular SolarWinds replacements include Prometheus, OpenObserve, Scanopy.

Can I self-host a free replacement for SolarWinds?+

Yes. Of the 8 free alternatives to SolarWinds, 8 can be self-hosted on your own server or local machine: NetData (Open Source), Prometheus (Open Source), OpenObserve (AGPL-3.0), Scanopy (Open Source), Zabbix (Open Source), Checkmk (GPL-2.0), Icinga (Open Source), Nagios (Open Source).

How much does switching from SolarWinds to a free alternative save?+

SolarWinds starts at $35/month per seat ($420/year). Switching a 5-person team to a free alternative like NetData saves $2,100 per year in software subscription fees.

Should I vibe-code or build my own SolarWinds clone from scratch?+

Our build verdict for SolarWinds is NO (use a free alternative, save the tokens). Instead of paying recurring SaaS fees for SolarWinds or rebuilding it from scratch, deploy one of the 8 battle-tested open-source alternatives like NetData.

What is the catch when switching from SolarWinds to NetData?+

Requires self-hosting setup, updates, and server maintenance compared to managed SolarWinds.