When this came out, about a decade ago at the time of writing,
it was revolutionary.
At this point, it's a small, dead end of evolution -
principally due to the developers inability to keep developing it.
With the advent of dual-core, 4-core, 8-core CPUs, and the support in audio hosts for these new developments, the money that was spent on (an extremely expensive) connectivity solution was better spent on new CPUs,
and FX-teleport, to an extent, became redundant.
Despite the developers continued insistence that they WERE working on a version 2, with support for multicore processors etc,
this never eventuated, leaving the frustrated users with a dead-end product that could only utilise a quarter of their slave machine's processing power.
In addition, many host developers, such as cockos (who developed REAPER) came up with their own proprietary solutions that Did support newer technologies, and supported them flawlessly.
In the end, the concept is great - the delivery dated, and now, 100% redundant, due to the developer's lack of delivery on their, decades-old, promises.
Avoid, and buy a better CPU - or a better host - instead.
This is a great plug. The only problem with it is the broken automation. As acknowledged by Sonalksis themselves: "... the resolution of the FreeG's automation is not perfect. This is a side effect of the wrapping code we use to produce AU, VST and RTAS versions of the plugin from the same codebase. We've attempted to improve this, but it's not possible without breaking compatibility with old sessions that use the FreeG." The volume slider, the incremental detail, the extra "gain" knob, the metering are all superb - with the exception that you can't use it to 'ride' volumes and record volume automation into your audio program. That's the only thing making this great 'indispensible' freebie into a waste of time for anything but large volume drops/jumps and accurate metering - and at those two things it excels. Just don't try to use it like a vocal rider.