1. Linux：
Linux是由Linus Torvalds开发的一组类似于Unix的开源操作系统。它是Linux发行版的打包。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。 1991年发布了第一个Linux版本。
2. Haiku：
Haiku是Haiku Incorporation提供的免费开源操作系统。它主要是为个人计算机设计的。它与挂起的操作系统BeOS有很多相似之处。它主要用C++编写，并提供了一个面向对象的API。该操作系统的开发始于2001年，并于2008年成为自托管操作系统。Haiku的第一个版本于2009年发布。
Linux和Haiku之间的区别：
| S.No. | LINUX | HAIKU |
|---|---|---|
| 1. | It was developed by Linus Torvalds. | It was developed by Haiku Incorporation. |
| 2. | It was launched in 1991. | It was launched in 2009. |
| 3. | Its target system types are embedded systems, mobile devices, personal computers, servers, mainframe computers and supercomputers. | Its target system types are personal computers. |
| 4. | Computer architectures supported by Linux are IA-32, x86-64, ARM, PowerPC and SPARC. | Computer architectures supported by Haiku are IA-32, PowerPC and x86-64. |
| 5. | Its kernel type is Monolithic. | Its kernel type is Hybrid. |
| 6. | Its native APIs are LINUX/POSIX. | Its native APIs are POSIX and BeOS API. |
| 7. | It has preferred license of GNU GPLv2 (kernel). | It has the preferred license of MIT. |
| 8. | The non-native APIs supported through its subsystems are Mono, Java, Win16 and Win32. | The non-native APIs supported through its subsystems are Java and Qt. |
| 9. | File systems supported by Linux are ext2, ext3, ext4, btrfs, ReiserFS, FAT, ISO 9660, UDF and NFS. | File systems supported by Haiku are BFS, FAT, ISO 9660, ext3 and NTFS. |
| 10. | Its package management depends on the distribution. | Its package management is Ports collection (haikuport). |
| 11. | Its update management depends on the distribution. | Its update management is pkgman and HaikuDepot. |