Breezy

Breezy was one of the first jailbreaks for iPhoneOS 1.0.x, by Riverdark, as a macOS counterpart to iBrickr, and was eventually superseded by AppTapp Installer. It can be downloaded from the r/LegacyJailbreak Archives. The software became open source with the release of v1.1.1.

Changelog
v1.0 - 07/23/07


 * Initial release for Mac (universal binary, but jailbreak crashes on PPC)

v1.0.1 - 07/24/07


 * made jailbreak 'cleaner' by getting rid of restore boot output
 * got rid of some debugging output

v1.0.2 - 07/24/07


 * added credits for iPhoneDev team

v1.0.3 - 07/24/07


 * switched PEM files to be the same ones that iASign uses

v1.1 - 07/26/07


 * Jailbreak works on PPC Macs now! Big thanks to ixtli for this
 * Made alert messages more consistent
 * Refactored phone interaction code out into a dylib

v1.1.1 - 07/28/07


 * Added fix for problem where jailbroken phone would appear to have only a small amount of storage space in iTunes (thanks to iZsh)
 * Made it so that the firmware path is only required when doing a jailbreak (rather than each time it starts up)
 * Changed the way device sessions are opened/closed
 * Put preliminary Win32 support in
 * First open source release

v1.1.2 - 07/30/07


 * Added "Backup Activation" button/menu item which allows users to back up the activation file on their phone
 * Some code cleanup and header commenting in libPhoneInteraction

v1.1.3 - 08/01/07


 * Changed the way the AFC service is used in libPhoneInteraction, which makes file I/O much more stable
 * Added support for iPhone firmware version 1.0.1

v1.1.4 - 08/02/07


 * Added backwards compatibility with older jailbreak method. This allows iActivator to properly detect phones which have been jailbroken using iFuntastic instead of iActivator
 * Removed -p option from afc2 service for compatibility with iPHUC
 * Got rid of custom MobileDevice.h header file so that stock version on Wiki can be used (and I don't have to distribute it with the source code)
 * Fixed a bug in the Windows code (still not working 100% yet though)