InTaxi Firenze is a new women's cooperative Taxi Association staffed and operated by female taxi drivers only. Some details from TuscanTraveler:
There are nine women who have formed an all-female taxi service in Florence that operates from 5am to 11pm daily. All of the drivers in this new taxi cooperative speak English. Word is that they are becoming quite popular and are getting a lot of negative pressure from the good-ol’-boy network in the taxi union. More information about this service (in Italian) can be found at: http://www.intaxifirenze.it/, Their telephone number is longer and not as easy to remember as those for regular cabs, but in a cell phone's memory it is just a click away: 055 200 1326.