Top Alternatives to MikroTik RouterOS

DD-WRT is a powerful, free Linux-based firmware replacement for a wide range of wireless routers. It transforms consumer-grade network hardware into a highly customizable and feature-rich platform, offering advanced control and capabilities typically found in commercial-grade equipment.

OpenWrt is a highly customizable, Linux-based embedded operating system designed for routers and other embedded devices. It replaces vendor firmware, offering advanced networking features, enhanced security, and extensive flexibility.

pfSense is an open-source firewall and router software distribution based on FreeBSD. It provides a powerful and flexible platform for a wide range of networking needs, from small home networks to large enterprise environments, emphasizing security, reliability, and comprehensive feature sets.

Tomato is a highly regarded custom firmware designed for Broadcom-based routers, offering advanced features and enhanced control beyond the stock manufacturer firmware. While discontinued, it remains a popular choice for users seeking improved network performance, diagnostics, and configuration options on compatible hardware.