Head-to-Head Comparison · Alternative to Paessler PRTG · 📟 monitoring
Paessler PRTG vs Checkmk
Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available. Here is how Checkmk ($0/mo open source) stacks up against Paessler PRTG ($35/mo) across cost, hosting, data privacy, and real-world trade-offs.
Checkmk is a verified GPL-2.0-licensed open-source replacement for Paessler PRTG. Switching from Paessler PRTG ($35/mo) saves $420/yr per solo seat, or $2,100/yr for a 5-person team. Deployment: Runs on Self-host.
The catch: Requires self-hosting setup, updates, and server maintenance compared to managed Prtg.
Paessler PRTG vs Checkmk Specifications
facts verified 2026-11-07
| Dimension | Paessler PRTG (Paid) | Checkmk (Replacement) |
|---|---|---|
| Monthly Price | $35 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $420 / yr | $0 / yr (Save $420) |
| 1-Year Cost (5 seats) | $2,100 / yr | $0 / yr (Save $2,100) |
| 1-Year Cost (10 seats) | $4,200 / yr | $0 / yr (Save $4,200) |
| Source & License | Proprietary SaaS | open source GPL-2.0 |
| Where It Runs | Vendor Cloud | Self-host (your server) |
| Platforms | Web / Cloud | webself-hosteddocker to self-host |
| GitHub Stars | — | ★ 2.6k (active nov 2026) |
Deep Dive: Switching from Paessler PRTG to Checkmk
Trade-offs, installation & data architecture
What you trade away
Requires self-hosting setup, updates, and server maintenance compared to managed Prtg.
How to deploy Checkmk
Clone https://github.com/tribe29/checkmk or deploy with Docker Compose
What it takes to run
Deploy via Docker or binary release from GitHub and configure environment variables.
Where your data lives
All application data and configuration live on your own server or local database.
Why fork Checkmk instead of vibe-coding a Paessler PRTG clone?
Instead of paying recurring SaaS fees for Paessler PRTG or rebuilding it from scratch, deploy one of the 6 battle-tested open-source alternatives like NetData.
Paessler PRTG vs Checkmk FAQ
Is Checkmk a good free alternative to Paessler PRTG?+
Yes. Checkmk is a verified open-source (GPL-2.0) replacement for Paessler PRTG. Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.
What is the catch when switching from Paessler PRTG to Checkmk?+
Requires self-hosting setup, updates, and server maintenance compared to managed Prtg.
How much do you save switching from Paessler PRTG to Checkmk?+
Paessler PRTG costs $35/mo ($420/yr) per seat, whereas Checkmk is $0/mo. Switching saves $420/yr for a solo user, $2,100/yr for a 5-person team, and $4,200/yr for a 10-person team.
How do I install or self-host Checkmk instead of Paessler PRTG?+
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.
