Mikoritik router os, is known as a simple router os that can be route and manage your internet connection. The router OS is so tiny, the master of installer isjust less than 30 Mb. Its easy install, easy setting and still much more great features in it.
It takes from wikipedia that The main product of MikroTik is a Linux-based operating system known as MikroTik RouterOS. It lets users turn any PC, MIPS, or PowerPC based machine, into a full-featured router allowing features such as firewall rules, VPN Server and Client, bandwidth shaper, QoS, wireless access point and other commonly used features for routing and connecting networks together. The operating system is licensed in escalating levels, each releasing more of the available RouterOS features as the level number rises. Licensing is fee based and escalates with the released features. There is a software called Winbox which provides a sophisticated GUI for the RouterOS operating system.
You can download here :
Link download for winbox-2.2.10.exe