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. QNX：
QNX 是由 Blackberry Limited 提供的商业和实时操作系统。它是一个类 Unix 操作系统。该操作系统中使用的内核是微内核。它是最早在商业上取得成功的微内核操作系统之一。它最初由 Quantum Software Systems 开发，后来更名为 QNX Software Systems。 QNX 软件系统公司于 2010 年被黑莓有限公司收购。 QNX 的第一个版本于 1982 年推出。
AIX 和 QNX 的区别：
| AIX | QNX |
|---|---|
| It was developed by IBM. | It was developed by QNX Software Systems. |
| It was launched in 1986. | It was launched in 1982. |
| Its target system type is Server, NAS and workstation. | Its target system types are automotive, medical, smartphones, consumer, industrial, embedded systems and safety. |
| It is owned by IBM. | It is owned by Blackberry Limited. |
| Computer architectures supported are POWER, PowerPC-AS, PowerPC and Power ISA. | Computer architectures supported by QNX are x86, SH-4, PowerPC, ARM and MIPS. |
| Kernel type is Monolithic with modules. | Its kernel type is Microkernel. |
| The native APIs are SysV/POSIX. | Its native APIs are POSIX and Java. |
| Preferred license is Proprietary. | It has the preferred license of Proprietary. |
| The non-native APIs supported through its subsystems are Mono, Java, Win16 and Win32. | 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 by QNX are QNX4FS, QNX6, ext2, FAT, ISO 9660, Joliet, NFS, CIFS, ETFS, UDF, HFS, HFS+ and NTFS. |