Should I use Kamailio or OpenSIPS?
At the time of this writing, there is no substantive difference between the two in terms of either new functionality or compatibility. That may not be the case indefinitely; if it were, the would not be much point to the fork. Just about any answer to this question is presently a political one and may carry ad hominem weight that is additionally toxic in a commercial atmosphere that is already damaged by the name changes and the fork. Nevertheless, we need to standardize our offering and process (just like any business), and consequently are put in the position of having to pick one — like all other users of the former OpenSER. Although we support both projects, we prefer, recommend and deploy Kamailio at this time. The primary reason for this is that we have an existing relationship with the development and project management team, and we believe they are doing a better job of building a stable, reliable business environment around the project that commercial adopters can count on. T
