but even so, I'd love to find something that's either web-based or compatible with the Mac system.

Lots of us have good primers on our web sites.  

@Sean OToole, On the Propert Radar web version, there is an export option Wise Agent. 

I am interested in participating in like discussions and/or web conferences from afar (being in Spain, it'd be a fair stretch to attend meetups in NY).

You should be able to find tax info on the appraisal districts web site.  

From web designs, to app development for property management companies, you name it!

Hi Eugene, I found a previous discussion here: https://www.biggerpockets.com/forums/49/topics/165...Soundcu shows a limit of 90% LTV on their web site.

Lastly, I use a web based software called Joist.  

Your mobile device is pretty much a mini laptop computer that's permanently connected to the web, pushing and pulling information throughout the day and night (largely without your input or permission).

Megan’s Law “Pursuant To Article I, Section 8-A of the Penal Code, information about specified registered sex offenders is made available to the public via an Internet Web site maintained by the Department of Justice at http://www.megans-law.net/Virginia-Megans-Law.asp depending on the offender’s criminal history, this information will include either the address at which the offender resides or the community of residence and ZIP Code in which he or she resides.”