There are a bunch of different transportation options available.  Below are links to all the different ground transportation services available:

*Please note that you probably will not need a rental car if you are staying in the city.  You might want to see if your hotel offers a shuttle service from the airport*

Rental Car Options

Alamo Car Rental
Avis Car Rental
Budget Car Rental
Dollar Car Rental
Enterprise Car Rental
Hertz Car Rental
National Car Rental
Thrifty Car Rental

Car Service Options

UBER
LYFT