1. 视窗：
Windows 是一组由 Microsoft Incorporation 提供的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 作为其家族成员。早些时候，它包括不再使用的 Windows 9x、Windows Mobile 和 Windows Phone。它是个人计算机中最常用的操作系统。微软于 1985 年推出了 Windows 的第一个版本。它具有带有模块的混合内核。
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。
Windows 和 QNX 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. |