1. macOS：
macOS是Apple Incorporation提供的一系列专有图形操作系统。它以前被称为Mac OS X，后来被称为OSX。它是专门为Apple Mac计算机设计的。它基于Unix操作系统。它是使用C，C++，Objective-C，汇编语言和Swift开发的。它是仅次于Windows的个人计算机中第二使用最多的操作系统。苹果于2001年发布了macOS的第一个版本。
2. Chrome操作系统：
Chrome操作系统是Google提供的基于Linux内核的操作系统。它使用Google Chrome浏览器作为主要用户界面。它是使用C，C++，Javascript，HTML5， Python和Rust开发的。它用于称为Chromebook的个人计算机中。谷歌于2009年发布了第一版Chrome OS。谷歌宣布将其作为一种操作系统，其中用户数据和应用程序都驻留在云中。 macOS和Chrome操作系统之间的区别：
| S.No. | MACOS | CHROME OS |
|---|---|---|
| 1. | It was developed and is owned by Apple Incorporation. | It was developed and is owned by Google LLC. |
| 2. | It was launched in 2001. | It was launched in 2009. |
| 3. | Its target system types are workstation, personal computers and embedded systems. | Its target system types are Chromebook, Chromebox, Chromebase and tablets. |
| 4. | Computer architectures supported by macOS are x86-64(10.4.7-present), IA-32(10.4.4-10.6.8) and PowerPC(10.0-10.5.8). | Computer architectures supported by Chrome OS are ARM, IA-32 and x86-64. |
| 5. | Its kernel type is Hybrid with modules. | Its kernel type is Monolithic with modules. |
| 6. | Its package management is macOS installer. | Its package management is Portage. |
| 7. | It is specifically designed for MacBook. | It is specifically designed for Chromebook. |
| 8. | Its native APIs are Carbon, Cocoa, Java and BSD-POSIX. | Its native APIs are SysV/POSIX. |
| 9. | It has the preferred license of Proprietary, APSL and GNU GPL. | It has the preferred license Proprietary. |
| 10. | The non-native APIs supported by its subsystems are Toolbox, Win16 and Win32. | The non-native APIs are not supported by its subsystems. |
| 11. | File systems supported by macOS are HFS+, APFS, HFS, UFS, AFP, ISO 9660, FAT, UDF, NFS, SMBFS, NTFS, FTP, WebDAV and ZFS. | File systems supported by Chrome OS are eCryptfs, NTFS, FAT, FAT16, FAT32, exFAT, ext2, ext3, ext4, HFS+, MTP, ISO 9660 and UDF. |