OPNsense Firewall & Routing Software

OPNsense is a specialized open-source, FreeBSD-based firewall and routing platform. It was originally founded in 2015 as a fork of m0n0wall and pfSense. The project was initiated by Deciso, a Dutch company with a long history in open-source networking software.

While the software is available globally for download and can be installed on generic hardware, the official hardware appliances are primarily engineered and assembled in the Netherlands. The brand is deeply rooted in the open-source community, maintaining transparency and security as its core values. Today, it remains under the active development and stewardship of Deciso, which provides both professional support and specialized hardware solutions to worldwide markets.