The XQuartz project is an open-source effort to develop a version of the X.Org X Window System that runs on OS X. Together with supporting libraries and applications, it forms the X11.app that Apple shipped with OS X versions 10.5 through 10.7.
SEPTEMBER 20 2004 - MAC OS 9 AVAILABLE. In addition to the Mac OS 7.5, 8.0, and 8.1 CDs, we have 3 Mac OS 9 CDs available to give away - Mac OS 9.0, Mac OS 9.1, and Mac OS 9.2.1. JULY 23 2004 - MAC OS LIQUIDATION! The moment you've been waiting for: we are liquidating our entire inventory of original Mac OS packages.
- Images for the virtual desktop are now being preloaded into RAM. When this is complete, you will be presented with the desktop and be able to browse all available options without the need for further loading.
- Downloads of the PCSX2 emulator for Windows, Linux and Mac.

Quick Download
| Download | Version | Released | Info |
|---|---|---|---|
| XQuartz-2.7.11.dmg | 2.7.11 | 2016-10-29 | For OS X 10.6.3 or later |
| X11-2.6.3.dmg | 2.6.3 | 2011-07-20 | For OS X 10.5.x (final Leopard release) |
Important Info for 10.5 Users
OS X Software Updates have included some of the work done by the XQuartz project, but for various reasons, Apple cannot ship the latest and greatest version offered by the XQuartz site. Since the XQuartz X11 package clobbers Apple's X11.app, their software update will clobber the XQuartz X11 package. Because of this, you may experience conflicts after doing a Software Update from Apple. Please re-install the latest XQuartz X11 release for Leopard after installing a system software update to OS X 10.5.x Leopard.
License Info

An XQuartz installation consists of many individual pieces of software which have various licenses. The X.Org software components’ licenses are discussed on theX.Org Foundation Licenses page.The quartz-wm window manager included with the XQuartz distribution uses the Apple Public Source License Version 2.
General information
What is SheepShaver?
SheepShaver is a MacOS run-time environment for BeOS and Linux that allows you to run classic MacOS applications inside the BeOS/Linux multitasking environment. This means that both BeOS/Linux and MacOS applications can run at the same time (usually in a window on the BeOS/Linux desktop) and data can be exchanged between them. If you are using a PowerPC-based system, applications will run at native speed (i.e. with no emulation involved). There is also a built-in PowerPC emulator for non-PowerPC systems.
SheepShaver is distributed under the terms of the GNU General Public License (GPL). However, you still need a copy of MacOS and a PowerMac ROM image to use SheepShaver. If you're planning to run SheepShaver on a PowerMac, you probably already have these two items.

Supported systems
SheepShaver runs with varying degree of functionality on the following systems:
Online Mac Os Emulator
- Unix with X11 (Linux i386/x86_64/ppc, NetBSD 2.x, FreeBSD 3.x)
- Mac OS X (PowerPC and Intel)
- Windows NT/2000/XP
- BeOS R4/R5 (PowerPC)
Some of SheepShaver's features
Mac Os 9 Emulator Pc
- Runs MacOS 7.5.2 thru 9.0.4. MacOS X as a guest is not supported.
- Color video display
- CD quality sound output
- Access to floppy disks, CD-ROMs and HFS(+) partitions on hard disks
- Easy file exchange with the host OS via a 'Host Directory Tree' icon on the Mac desktop
- Internet and LAN networking via Ethernet
- Serial drivers
- SCSI Manager (old-style) emulation
