1. 系统：
macOS 是 Apple Incorporation 提供的一系列专有图形操作系统。它早期被称为 Mac OS X，后来被称为 OS X。它是专门为 Apple mac 计算机设计的。它基于Unix操作系统。它是使用 C、C++、Objective-C、汇编语言和 Swift 开发的。它是个人计算机中仅次于 Windows 的第二大常用操作系统。苹果公司于 2001 年推出了 macOS 的第一个版本。
2. GhostBSD :
GhostBSD 是由 Eric Turgeon 和 GhostBSD 团队开发的免费开源操作系统。它是一个类 Unix 操作系统，其设计灵感来自 TrueOS 操作系统。它有一个名为 MATE 的默认桌面环境。它专门用于台式机和工作站。早些时候，它使用了一个名为 GNOME 的默认桌面环境。 GhostBSD 的第一个版本于 2009 年推出。它具有带有模块的 Monolithic 内核。
macOS 和 GhostBSD 的区别：
| S.No. | MACOS | GHOSTBSD |
|---|---|---|
| 1. | It was developed by Apple Incorporation. | It was developed by Eric Turgeon. |
| 2. | It was launched in 2001. | It was launched in 2009. |
| 3. | It is specifically designed for Apple mac computers. | It is designed for desktops of all companies. |
| 4. | Its target system types are workstation, personal computers and embedded systems. | Its target system types are workstation and desktop. |
| 5. | Computer architectures supported by macOS are x86-64(10.4.7-present), IA-32(10.4.4-10.6.8) and PowerPC(10.0-10.5.8). | Computer architectures supported by GhostBSD are IA-32 and x86-64. |
| 6. | Its kernel type is Hybrid with modules. | Its kernel type is Monolithic with modules. |
| 7. | Its package management is macOS installer. | Its package management is Port collections. |
| 8. | Its update management is Software Update. | Its update management is by source or network binary update. |
| 9. | Its native APIs are Carbon, Cocoa, Java and BSD-POSIX. | Its native APIs are BSD/POSIX. |
| 10. | It has preferred license of Proprietary, APSL and GNU GPL. | It has preferred license of BSD. |
| 11. | The non-native APIs supported by its subsystems are Toolbox, Win16 and Win32. | The non-native APIs supported by subsystems are Mono, Java, Win16, Win32 and Linux. |
| 12. | File systems supported by macOS are HFS+, APFS, HFS, UFS, AFP, ISO 9660, FAT, UDF, NFS, SMBFS, NTFS, FTP, WebDAV and ZFS. | File systems supported by GhostBSD are UFS2, ext2, ext3, FAT, ISO 9660, UDF, NFS, ReiserFS, XFS and ZFS. |