I would like to know what is the latest version of Firefox Portable for Mac. I just found versions from 2011-2013 and they seem pretty old. By the way, these softwares are not from the official developer (Mozilla).
I do not know what Firefox Portable for Mac is, but I am running a current version of Firefox on my Macs, you can get it from here: https://www.mozilla.org/en-US/firefox/new/?utm_source=google&utm_medium=paidsearch&utm_campaign=sem2015Q2&utm_term=fast+web+browser&utm_content=speed1
Firefox discusses portable here https://support.mozilla.org/en-US/questions/973932