OPNsense buɗaɗɗen tushe ne, FreeBSD na tushen Tacewar zaɓi da software na sarrafa kayan aiki wanda Deciso, kamfani ne a cikin Netherlands wanda ke kera kayan masarufi da siyar da fakitin tallafi don OPNsense. cokali mai yatsa ne na pfSense, wanda shi kuma an yi shi daga bangon m0n0 wanda aka gina akan FreeBSD. An kaddamar da shi a watan Janairun 2015.