Sorbet Leopard

"Sorbet Leopard" is the nickname of Mac OS X 10.5.9, an unofficial build of Mac OS X 10.5 (Leopard) that was first released on October 31, 2021 to provide continued support solely for PowerPC Macs. It combines elements of Mac OS X 10.5.8 and the PowerPC beta of Mac OS X 10.6 (Snow Leopard), while removing unneeded Intel binaries to streamline the system for improved PowerPC performance.

Features

 * Faster startup times, application launch times, and network performance
 * Smoother and more fluid UI animations
 * Full compatibility with the Apple Aluminum Keyboard and Magic Mouse (with Momentum Scrolling)
 * Desktop pictures, user pictures, screen savers, fonts, and Apple dictionaries inline with Mac OS X 10.6.8 (Snow Leopard), alongside apps such as Dashboard 1.7, Exposé 1.1, Front Row 1.1, Spaces 1.1, Time Machine 1.1, Java Preferences 13.9.8, and System Profiler 10.6.0
 * Comprehensive system themes inline with Mac OS X 10.8.5 (Mountain Lion), macOS 10.13.6 (High Sierra), and iOS 7, featuring authentic desktop pictures, user pictures, and screen savers unique to each theme
 * Updated security certificates inline with macOS 10.13.6 (High Sierra)
 * Updated applications including WebKit 604.5.6, Mail with WebKit integration, QuickTime 7.7 Pro, Bash 4.3.30, and ntpd 4.2.8
 * Deeply integrated optimizations such as a reduced OS size, reduced CPU and RAM usage, PowerPC-only code everywhere, and system-wide ad blocking

Requirements

 * PowerPC G4 or G5 processor.
 * At least 512 MB RAM.
 * 20 GB or larger Apple Partition Map-formatted partition.
 * Core Image-supported video card is strongly recommended.
 * USB 2.0 interface is strongly recommended.
 * Flash-based storage is suggested.

Update history

 * Sorbet Leopard v2 (Build 1.3) was released on November 1, 2021.


 * Sorbet Leopard Revision 1.4 was released on on November 11, 2021. It integrated PowerPC-compatible updates from Mac OS X 10.6.8 and addressed various issues.


 * Sorbet Leopard Revision 1.5 was released on May 2, 2022 with its own "Sorbet Leopard App Store". Among the available apps is "Monolingual", a tool to help reduce the drive footprint of Sorbet Leopard by removing localization files for unneeded languages. Some users later found that  would cause some stability and performance issues in some configurations; this can be replaced with   from WebKit for OS X Leopard. As these are not official updates, a fresh install is required each time. Migration Assistant can be used, though Carbon Copy Cloner is recommended for the process after backing up personal files.