Built by the people who needed it.

If you've managed servers at any real scale, you know the problem. You have hosts running Ubuntu, Debian, RHEL, maybe some CentOS or Rocky Linux. A few FreeBSD firewalls running pfSense. Windows boxes the dev team insisted on. Each one needs patches. Each one uses a different package manager. And nobody has a clear, centralised view of what's pending.

Enterprise patch management tools exist, but they're typically built for Windows-first environments, cost per-host, and require you to trust a third party with access to your infrastructure. Most ignore FreeBSD entirely. For teams with mixed fleets, the options boil down to “write scripts and hope” or “buy something that doesn't quite fit.”

PatchMon is the third option. An open-source platform purpose-built for patch monitoring across Linux, FreeBSD, and Windows. APT, DNF, YUM, APK, Pacman, FreeBSD pkg, and Windows Update Agent - all first-class, all in one dashboard. It uses an outbound-only agent model that your security team will actually approve, and deploys as a single binary with no external dependencies beyond PostgreSQL and Redis.

For MSPs and consultants managing multiple client environments, PatchMon includes multi-tenancy with per-tenant database isolation. Each client gets their own environment, their own data, and their own reporting - all managed from a single operational layer.

We ship three editions. Community is the full platform under AGPLv3 - free to self-host, unlimited hosts, no artificial restrictions. PRO adds enterprise modules and priority support for teams that need it. Cloud removes the infrastructure overhead entirely.

The goal is straightforward: give every infrastructure team - from a five-person startup to a thousand-host enterprise - the patch visibility they need without the vendor tax.