Here's how you can download the free iOS 7.x jailbreak software for your iPad or iPhone.
1. Go to the evasi0n iOS 7.x jailbreak site.
2. Click the Mac OS X or Windows button (as of this writing there is no Linux version yet).
3. Or you can click on one of the mirrors listed in the middle of the page.
Here's a list of iOS 7.x jailbreak requirements:
5 minutes of your time!
A computer, running Windows (XP minimum), Mac OS X (10.7 minimum)
iTunes installed if you're running Windows
An iPhone, iPad or iPod running iOS 7.0 through 7.0.4 (you may check in Settings / General / About => Version)
A USB cable to connect the device to the computerMore at evasi0n
Be sure to read the "Important! Read Me" information on the iOS 7.x jailbreak page before you try to jailbreak your iOS device. It's better to be safe than sorry if you want your jailbreak to be successful. So take the time to absorb that important information before proceeding.
Additional resources for iOS 7.x Jailbreak