I'm unsure if you're referring to open-source software or hardware, but for software pfSense [1] and OpenWrt [2] are both popular open-source routers. [1] http

I'm unsure if you're referring to open-source software or hardware, but for software pfSense [1] and OpenWrt [2] are both popular open-source routers. [1] https://www.pfsense.org/ https://www.pfsense.org/ [2] https://openwrt.org/ https://openwrt.org/