Side by side
OPSI vs PatchMon
Both stand on patch management software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Open source APILinuxMac+3
OPSI covers deployment, inventory, patching, and configuration in a single client-management system. Check the license limits and minimum device purchase against the size of your setup.
Visit OPSI
Free plan Open source APILinuxSelf-hosted+2
PatchMon combines patch controls and audit records with compliance scanning for mixed server fleets. Check the deployment model and platform limits that fit your environment before choosing a plan.
Visit PatchMonThe facts
| OPSI | PatchMon | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Yes | Yes |
| Runs on | API, Linux, Mac, Self-hosted, Web, Windows | API, Linux, Self-hosted, Web, Windows |
| Lowest paid plan | See the plans | Starter: $1 per host a month |
| Plans published | 5 | 5 |
| Maker | Not published | Not published |
| Website | opsi.org | patchmon.net |
| On patch management software | #1 of 49 | #2 of 49 |
OPSI: what it does well
- Automates software distribution and operating-system installation.
- Inventory can collect hardware details without an installed OS.
- Centralizes administration across multiple sites.
- Browser-based web interface needs no client-side installation.
What to know first
- Basic is limited to 30 devices per user.
- Basic is limited to one setup per user.
- Professional and Enterprise require at least 100 devices.
PatchMon: what it does well
- Policies support schedules, dry runs, approvals, and host assignment.
- Patch runs record actors, packages, timestamps, and command output.
- OpenSCAP scans include severity and remediation guidance.
- Monitoring agents do not require root access.
What to know first
- Windows patch deployment is still on the roadmap.
- Community Edition users operate the server and manage updates.
- Cloud trials require a card at signup.
Alternatives to OPSI Alternatives to PatchMon The whole list