based on linux kernel doesn't mean that all the programs are from somewhere else. most of the stuff is made by mikrotik entirely, and we can't release it for linux for many reasons, including technical.
Wow so we have this quote and then a member of the community comes along and proves you wrong (almost complete). MT should cough up some cash for this guys work and release it because he earned it
Actually, I think normis was answering mostly to the "winbox" part of the first posters request when he said "including technically". Winbox is not easily created for linux, as it uses windows dll's for it's dynamical support for automatically support newer RouterOS devices without upgrading the winbox.exe file.
This would then also require that they would create .so files for linux as well at each update and would need to use the same version of libraries as your linux distribution etc. which could be very different from distribution to distribution, unless you would recreate the winbox interface using the API support. But by using API it would require new versions of the program each time the API changes and each time new elements are added to RouterOS/API.
Anyways, adding linux support for winbox would require extra work that it might not be high enough demand after, to actually afford doing it. If enough customers needed it, they probably would do it. And since winbox works good enough in wine, the need is not that great.