MikroTik
Latvian networking hardware vendor. RouterOS = Linux-based proprietary OS. Aggressive pricing: enterprise features at hobby prices. Standard at WISPs (Wireless ISPs) + small ISPs in developing markets.
RouterOS syntax: own CLI (winbox GUI or terminal). Features: BGP, OSPF, MPLS, VRF, QoS, tunnels (IPsec, WireGuard, GRE) on sub-$100 hardware. Modern: $30 hAP routers, $1000 CCR routers with 40 Gbps. Trade-off: documentation challenge — community-wiki based, syntax fragmentation across versions. CVE history poor — many security incidents 2018+ via unpatched RouterOS. Power-user favourite but not beginner-friendly. Modern alternative: pfSense/OPNsense for x86, Cisco/Arista for enterprise.