1. 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，后来它被用于各种硬件平台，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 The 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。AIX 的最新稳定版本是 7.2。
2. 迷你 3 ：
MINIX 3 是由 Andrew S. Tanenbaum 开发的免费开源操作系统。它是在 Berkeley Software Distribution 许可下发布的。它是一个类Unix操作系统。它是专为工作站设计的。它源自 MINIX 1 和 MINIX 2 操作系统。它基本上是用C语言和汇编语言编写的。 MINIX 3 的第一个版本于 2005 年推出，该操作系统使用的内核是微内核。
AIX 和 MINIX 3 的区别：
| AIX | MINIX 3 |
|---|---|
| It was developed and is owned by IBM. | It was developed by Andrew S. Tanenbaum. |
| It was launched in 1986. | It was launched in 2005. |
| Its target system type is Server, NAS and workstation. | Its target system types are workstations. |
| Computer architectures supported are POWER, PowerPC-AS, PowerPC and Power ISA. | Computer architectures supported by MINIX 3 is IA-32. |
| Kernel type is Monolithic with modules. | Its kernel type is Microkernel. |
| The native APIs are SysV/POSIX. | Its native APIs are POSIX. |
| Preferred license is Proprietary. | It has the preferred license of BSD. |
| Update management is Service Update Management Assistant (SUMA). | Update management is Windows Update. |
| The non-native APIs supported through its subsystems are DOS API, Win16, POSIX and .NET. | The non-native APIs are not supported through its subsystems. |
| File systems supported are JFS, JFS2, ISO 9660, UDF, NFS, SMBFS and GPFS. | File systems supported are NTFS, FAT, ISO 9660. |