1. Windows：
Windows是Microsoft Incorporation提供的一组各种专有图形操作系统。它也被称为Microsoft Windows 。它目前包括Windows NT和Windows IoT作为其家族的成员。早期包括不再使用的Windows 9x，Windows Mobile和Windows Phone。它是个人计算机中使用最多的操作系统。 Windows的第一个版本由Microsoft于1985年发布。它具有带有模块的混合内核。
2. QNX：
QNX是Blackberry Limited提供的商业实时操作系统。它是一个类似Unix的操作系统。此操作系统中使用的内核是微内核。它是第一个商业上成功的微内核操作系统之一。它最初是由Quantum Software Systems开发的，后来被更名为QNX Software Systems。 QNX Sofftware Systems在2010年被BlackBerry Limited收购。QNX的第一个版本于1982年推出。
Windows和QNX之间的区别：
| S.No. | WINDOWS | QNX |
|---|---|---|
| 1. | It was developed by Microsoft Incorporation. | It was developed by QNX Software Systems. |
| 2. | It was launched in 1985. | It was launched in 1982. |
| 3. | It is owned by Microsoft Incorporation. | It is owned by Blackberry Limited. |
| 4. | Its target systems types are workstation, personal computers, media center, tablets and embedded systems. | Its target system types are automotive, medical, smartphones, consumer, industrial, embedded systems and safety. |
| 5. | Computer architectures supported by Windows are IA-32, x86-64, IA-64, ARM, Alpha, MIPS and PowerPC. | Computer architectures supported by QNX are x86, SH-4, PowerPC, ARM and MIPS. |
| 6. | Its kernel type is Hybrid with modules. | Its kernel type is Microkernel. |
| 7. | Its native APIs are Win32 and NT API. | Its native APIs are POSIX and Java. |
| 8. | It has the preferred license Proprietary and Source available. | It has the preferred license of Proprietary. |
| 9. | 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. |
| 10. | File systems supported by Windows are NTFS, FAT, ISO 9660, UDF, HFS+, FATX and HFS. | File systems supported by QNX are QNX4FS, QNX6, ext2, FAT, ISO 9660, Joliet, NFS, CIFS, ETFS, UDF, HFS, HFS+ and NTFS. |