securityrouter.org is described as 'The securityrouter.org project is a network operating system and software distribution based on OpenBSD, featuring a single, revision-managed, clear-text configuration file with soft re-configuration, editable from CLI and web interface' and is an app in the Security & Privacy category. There are seven alternatives to securityrouter.org for a variety of platforms, including Linux, Self-Hosted solutions, GNS3, Dynamips and VMware Player. The best alternative is DD-WRT, which is both free and Open Source. Other great apps like securityrouter.org are OpenWrt (Free, Open Source), pfSense (Free, Open Source), MikroTik RouterOS (Paid) and VyOS (Paid, Open Source).
OpenWRT ( open - wireless receiver transmitter ) is a niche Linux distribution mainly installed on embedded devices, e.g. residential gateways. It is built on top of the Linux kernel and consists of a collection of diverse software packages.