The 3.0 version of ZiPhoneOSX for Mac is provided as a free download on our website. This free Mac application was originally produced by Mac-free.com. The following version: 3.0 is the most frequently downloaded one by the program users. The program lies within System Tools, more precisely Device Assistants.
From the developer:
Jailbreak, activate and desimlock iPhone and iPod touch with a clear interface.
You may want to check out more software for Mac, such as ImTOO iPhone Transfer, Fire or Line 6 Edit, which might be similar to ZiPhoneOSX.