1. AIX：
AIX是IBM提供的一系列专有操作系统。 AIX代表Advanced Interactive eXecutive。最初，它是为IBM RT PC RISC工作站设计的，后来又用于各种硬件平台，例如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 Network Server。它是五个具有The Open Group的UNIX 03标准认证的商业操作系统之一。 AIX的第一个版本于1986年发布。AIX的最新稳定版本是7.2。
2. MINIX 3：
MINIX 3是一个免费的开源操作系统，由Andrew S. Tanenbaum开发。它是根据Berkeley软件发行许可证发行的。它是一个类似Unix的操作系统。它是专门为工作站设计的。它源自MINIX 1和MINIX 2操作系统。它基本上是使用C语言和汇编语言编写的。 MINIX 3的第一个版本于2005年发布。此操作系统中使用的内核是microkernel。
AIX和MINIX 3之间的区别：
| 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. |