From what I can tell, Kolmisoft only uses Freeswitch in the Class 4 M2 product. Seems there class five product is based off of asterisk, but I could be wrong. http://wiki.kolmisoft.com/index.php/M2_Switch

I have never heard of webitel before. 

I used FusionPBX log ago, and was impressed back then. It did have a lot of bugs, but I know there has been a ton of active development since then. Maybe I should give it another shot with commercial support. My userbase said the web interface was hard to navigate from what I remember. A side question with fusionPBX would be can you setup a scaleable and highly redundant platform just with freeswitch? Correct me if I am wrong but Fusion PBX is a GUI that sits on-top of Freeswitch. Other platforms I have seen usually have some version of SER sitting in-front of free switch acting as a media server. Fusion seems to just use Freeswitch. 

On Thu, Dec 17, 2015 at 5:06 PM, Stanislav Sinyagin <ssinyagin@gmail.com> wrote:
as far as I read somewhere, these guys base their software on top of
FreeSWITCH. But I never looked deeper into their solution:
http://www.kolmisoft.com/

Also I know these guys, and their platform is also based on
FreeSWITCH: http://webitel.com/



On Thu, Dec 17, 2015 at 4:11 PM, Colton Conor <colton.conor@gmail.com> wrote:
> What commercial commutations platforms exist that have freeswitch at the
> core of their platform? Something that could handle full class 5
> capabilities and hosted PBX capabilities similar to what you would find from
> a Broadsoft, Metaswitch, or Netsapiens platform?
>
> I know freeswitch is opensource so technically we could build our own, but
> we have no interest in building and maintaining our own platform.
>