To my knowledge, there are no plans on creating a version of eSignal for the Mac. My understanding is that there is a small demand for this product, and comparing that to the costs involved in developing for and supporting that OS... it's simply not a path we can go down at this point.
One measurement for demand is the feedback we receive from our clients. If you are a client and would like to submit a suggestion to us, then please click on Customer Support --> Make a Suggestion. Otherwise you can email them direct at email@example.com.
Have a suggestion to improve our products?
Click Support --> Request a Feature in eSignal 11