</>macrostackBrowse all
Tool profile · Networking & Routers

OPNsense

A powerful open-source firewall/router for a mini-PC.

90
sovereignty

OPNsense is a BSD-based, open-source firewall and routing platform you install on a small x86 appliance, giving you enterprise-grade networking, VPNs, and filtering on hardware you own.

OPEN SOURCEBSD-2-ClauseSELF-HOSTLOCAL-FIRST
LicenseBSD-2-Clause
PricingFree / open-source
Open sourceYes
Self-hostableYes
Local-first dataYes

What it does well

  • +Enterprise-grade features
  • +Excellent VPN + firewall control
  • +Frequent updates

Where it falls short

  • Needs a separate mini-PC/appliance
  • More than a casual user needs

Hardware note

Runs on a fanless mini-PC with multiple network ports — a common, quiet, low-power home setup.

OPNsense as an alternative to

Where OPNsense shows up in our comparisons, and how it ranked.

OPNsense head-to-head

Straight comparisons against the tools people weigh it against.

The Macrostack brief

New swaps, worth your inbox.

A short, occasional email when we add a high-intent alternative or ship a new head-to-head. No spam, no selling your address — unsubscribe in one click.