This is a list of CWM and TWRP recovery for Galaxy S3. Please find the appropriate CWM or TWRP for your Galaxy S3.
You can install CWM or TWRP recovery easily using an app, see How To Install IMG Files using Flashify App on Android!
Note: You will need CWM 184.108.40.206 or higher OR TWRP 220.127.116.11 or higher to install KitKat ROMs. If you are getting status error 7 while installing KitKat ROM, try updating your CWM or TWRP recovery to one of these below.
For Verizon S3 users with Android 4.3 or higher, you have locked bootloader, DO NOT INSTALL! You need to use SafeStrap Recovery instead. See Verizon S3 SafeStrap here.