1. Linux：
Linux 是一组开源的类 Unix 操作系统，由 Linus Torvalds 开发。它是一个打包的 Linux 发行版。一些最常用的 Linux 发行版是 Debian、Fedora 和 Ubuntu。它基本上是用C语言和汇编语言编写的。 Linux 中使用的内核是 Monolithic 内核。 Linux 发行版的目标系统是云计算、嵌入式系统、移动设备、个人计算机、服务器、大型计算机和超级计算机。 Linux 的第一个版本于 1991 年推出。
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。
Linux 和 QNX 的区别：
| S.No. | LINUX | QNX |
|---|---|---|
| 1. | It was developed by Linus Torvalds. | It was developed by QNX Software Systems. |
| 2. | It was launched in 1991. | It was launched in 1982. |
| 3. | It is owned by Linus Torvalds. | It is owned by Blackberry Limited. |
| 4. | Its target system types are embedded systems, mobile devices, personal computers, servers, mainframe computers and supercomputers. | Its target system types are automotive, medical, smartphones, consumer, industrial, embedded systems and safety. |
| 5. | Computer architectures supported by Linux are IA-32, x86-64, ARM, PowerPC and SPARC. | Computer architectures supported by QNX are x86, SH-4, PowerPC, ARM and MIPS. |
| 6. | Its kernel type is Monolithic. | Its kernel type is Microkernel. |
| 7. | Its native APIs are LINUX/POSIX. | Its native APIs are POSIX and Java. |
| 8. | It has preferred license of GNU GPLv2 (kernel). | It has the preferred license of Proprietary. |
| 9. | The non-native APIs supported through its subsystems are Mono, Java, Win16 and Win32. | The non-native APIs are not supported through its subsystems. |
| 10. | File systems supported by Linux are ext2, ext3, ext4, btrfs, ReiserFS, FAT, ISO 9660, UDF and NFS. | File systems supported by QNX are QNX4FS, QNX6, ext2, FAT, ISO 9660, Joliet, NFS, CIFS, ETFS, UDF, HFS, HFS+ and NTFS. |