I tried running pgAdmin 3, both versions 1.18.1 (the latest version available for Win 7 according to the notes on the download page) and 1.22.1 (the latest version). Both crash on my Windows 7 system when I try to do almost anything. Has anybody had any better luck.
I also tried pgAdmin 4, Beta 2, which is documented as working for Win 7. However, the dialog for creating a Server connection does not have support for SSL tunneling, which is required to get to the database. Is SSL tunneling no longer supported?