Top choices are HomeVision, Stargate (or RCS Commstar), Ocelot, and Cortexa.
Good list. I rememeber you saying you wouldn't recommend the Stargate to new custumers as it's near the end of its cycle.
I remember the comment about end-of-life but I don't think I was the one who made it. My concern with Stargate is that they stopped making the telephone/speach board which is it's best feature. I recall a lengthy discussion about what system, hadrware or software or combination, could do as much as the Stargate can do as easily as the Stargate can do it. In the end, no viable substitute was identified.
Most alternatives will have one or more of the following shortcomings:
Weak support for hardware inputs. (obviously does not apply security panel based systems)
Weak support for audio switching, particularly in connecting line level to speaker level, to phone level.
Weak support for telephone features such as dialing a phone system paging code and making an announcement.
Weak support for analog inputs, especially in applying scaling and offsets.
Weak support for triggering events on "any change" to a variable rather than just on crossing a preset threshold.
Overly difficult scripting or rules engine. No point and click rules builder.
Limited rules engine with no nested logic or complex formula options.
Limited number of rules or lines of code.
Limited or no support for inexpensive keypads and annunciators such as the RCS 7 button LED keypad or RCS 8 button LCD keypad.
Weak or no support for IR.