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。 Microsoft于1985年发布了Windows的第一个版本。用于个人计算机的Windows的最新版本是Windows 10。
2. 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。 macOS的第一个版本由Apple于2001年发布。macOS的最新稳定版本是10.15.1，也称为Catalina。
Windows和macOS之间的区别：
| WINDOWS | MACOS |
|---|---|
| It was developed and is owned by Microsoft Incorporation. | It was developed and is owned by Apple Incorporation. |
| It was launched in 1985. | It was launched in 2001. |
| It is designed for PC of all companies. | It is specifically designed for Apple mac computers. |
| Current stable version is Windows 10. | Current stable version is mac 10.15.1 (Catalina). |
| It is for workstation, personal computers, media center, tablets and embedded systems. | Its target system type is workstation, personal computers and embedded systems. |
| Computer architectures supported by Windows are IA-32, x86-64, IA-64, ARM, Alpha, MIPS and PowerPC. | Computer architectures supported are x86-64(10.4.7-present), IA-32(10.4.4-10.6.8) and PowerPC(10.0-10.5.8). |
| File systems supported are NTFS, FAT, ISO 9660, UDF, HFS+, FATX and HFS. | File systems supported are HFS+, APFS, HFS, UFS, AFP, ISO 9660, FAT, UDF, NFS, SMBFS, NTFS, FTP, WebDAV and ZFS. |
| Kernel type is Hybrid with modules here. | Kernel type is Hybrid with modules here also. |
| Package management is MSI or custom installer. | Package management is macOS installer. |
| Update management is Windows Update. | Update management is Software Update. |
| The native APIs are Win32 and NT API. | The native APIs are Carbon, Cocoa, Java and BSD-POSIX. |