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. 艾克斯：
AIX 是IBM 提供的一系列专有操作系统。 AIX 代表高级交互式执行程序。最初它是为 IBM RT PC RISC 工作站设计的，后来它用于各种硬件平台，如 IBM RS/6000 系列、基于 PowerPC 的系统、System-370 大型机、PS-2 个人计算机和 Apple 网络服务器。它是通过 Open Group 的 UNIX 03 标准认证的五个商业操作系统之一。 AIX 的第一个版本于 1986 年推出。
macOS 和 AIX 的区别：
| S.No. | MACOS | AIX |
|---|---|---|
| 1. | It was developed and is owned by Apple Incorporation. | It was developed and is owned by IBM. |
| 2. | It was launched in 2001. | It was launched in 1986. |
| 3. | Its target system types are workstation, personal computers and embedded systems. | Its target system types are Server, NAS and workstation. |
| 4. | 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 AIX are POWER, PowerPC-AS, PowerPC and Power ISA. |
| 5. | Its kernel type is Hybrid with modules. | Its kernel type is Monolithic with modules. |
| 6. | Its package management is macOS installer. | Its package management is installp and RPM. |
| 7. | Its update management is Software Update. | Its update management is Service Update Management Assistant (SUMA). |
| 8. | Its native APIs are Carbon, Cocoa, Java and BSD-POSIX. | Its native APIs are SysV/POSIX. |
| 9. | It has preferred license of Proprietary, APSL and GNU GPL. | It has preferred license Proprietary. |
| 10. | The non-native APIs supported by its subsystems are Toolbox, Win16 and Win32. | The non-native APIs are not supported by its subsystems. |
| 11. | It has default GUI ‘on’. | It does not have default GUI ‘on’. |
| 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 AIX are JFS, JFS2, ISO 9660, UDF, NFS, SMBFS and GPFS. |