We maintain a list of open source and commercial billing solutions on the wiki here:

https://wiki.freeswitch.org/wiki/Billing

I wrote up which tools in FreeSWITCH I used for my DIY billing on that page, too: DIY Billing for FreeSWITCH

-Avi


On Fri, May 2, 2014 at 4:24 AM, Joli Martinez <mrjoli021@gmail.com> wrote:
Hello,

I am creating a softswitch to resell minutes.  I will be using Kamailio and Freeswitch.  I am looking for a real-time billing engine and accounting.  I would prefer an open-source solution but open to suggestions.  What would you recommend?

Thanks,
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