
Google Cloud VM Manager
7.1#9 in patch management softwareFree planFree planWebAPILinuxWindows
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| Fact | Google Cloud VM Manager | PatchMon |
|---|---|---|
| Access control | Creating patch jobs or OS policy assignments requires IAM permissions that Google says can grant the ability to run code on VMs; Google recommends least privilege. | The platform includes built-in and custom RBAC, OIDC/SSO, TOTP 2FA, session management and audit logging. |
| Company founding | Gartner Peer Insights lists Google as founded in 1998 and headquartered in Mountain View, California. | LinkedIn lists PatchMon as founded in 2025. |
| Compliance | Google Cloud lists auditor-validated offerings including ISO 27001, ISO 27017, ISO 27018, SOC 1, SOC 2, SOC 3, PCI DSS, FedRAMP, and HIPAA-related resources. | PatchMon supports OpenSCAP CIS benchmark scans with per-rule results, severity, remediation guidance, and score tracking. |
| Documentation depth | The documentation includes overview, setup, operating-system details, patch guides, policy guides, troubleshooting, API reference links, Terraform guides, quotas, and release-note links. | The documentation set includes a 168-page Admin Guide, 207-page Operator Guide and 128-page API and Integrations Guide. |
| Integrations | VM Manager works with the Google Cloud console, Google Cloud CLI, direct OS Config API calls, and Terraform resources. | Documented integrations include Discord, getHomepage, Ansible and Proxmox LXC auto-enrollment. |
| Patch controls | Patch jobs can use one-time or recurring schedules, selected patch approvals, and pre- and post-patching scripts. | Patch policies support immediate, delayed, or fixed-time schedules, dry-run validation, approval workflows, and per-host or host-group assignment. |
| Public API | Patch deployments are initiated through the VM Manager API, also called the OS Config API. | PatchMon publishes versioned REST APIs with an embedded OpenAPI browser and scoped credentials using Basic Authentication. |
| Purpose | VM Manager manages operating systems for large Windows and Linux VM fleets running on Compute Engine. | PatchMon provides a central dashboard for patch monitoring across Linux, FreeBSD, and Windows fleets. |
It suits teams maintaining Windows or Linux VM fleets on Compute Engine that need patching, inventory, and software configuration policies. Teams should account for its English-locale requirement and single-project patch-job scope.
PatchMon suits infrastructure teams responsible for mixed server fleets, from small startups to organizations with a thousand hosts. The self-hosted edition fits teams prepared to manage their own server operations.