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. IBM i：
IBM i是IBM提供的操作系统或操作系统。它提供了与IBM Power Systems的抽象接口。它遍历技术独立机器接口和系统许可内部代码或内核之上的低层机器接口代码或微代码层。它使IBM Power平台能够支持各种业务应用程序，并且可以与其他操作系统共存。它是一个开放源代码的操作系统。 IBM i的第一个版本于1988年发布。IBMi的最新稳定版本是7.3。
AIX和IBM i之间的区别：
| AIX | IBM i |
|---|---|
| It was developed and is owned by IBM. | It was developed and is owned by IBM. |
| It was launched in 1986. | It was launched in 1988. |
| Its target system type is Server, NAS and workstation. | Its target system type are minicomputer and server. |
| Kernel type is Monolithic with modules. | Kernel type is Microkernel and Virtual machine. |
| Preferred license is Proprietary. | Preferred license is Proprietary |
| It is used for personal computers. | It is not used for personal computers. |
| It is used in computers of all companies. | It is majorly used in IBM devices. |
| File systems supported are NTFS, FAT, ISO 9660, UDF. | File systems supported are JFS, JFS2, ISO 9660, UDF, NFS, SMBFS and GPFS. |