Mac OS X 10.0 Cheetah was Apple\u2019s first modern UNIX-based operating system, introducing the Aqua interface, Dock, and a completely new foundation for Mac computing. It was powerful in concept but slow and unfinished in performance, making it more of a starting point than a daily-use system. It ran on PowerPC Macs such as the iMac G3, Power Mac G4, and early iBook models. The name \u201cCheetah\u201d comes from the animal, symbolizing speed. Watch here: https:\/\/www.youtube.com\/results?search_query=Mac+OS+X+10.0+Cheetah<\/a><\/p>\n\n\n\n Mac OS X 10.1 Puma improved system responsiveness, application performance, and overall usability, making the new operating system more practical for everyday users. It refined the early Mac OS X experience without introducing major new features. It supported PowerPC-based Macs like the iMac G3\/G4 and PowerBook G4. The name continues the big cat theme, with \u201cPuma\u201d representing agility and refinement. Watch here: https:\/\/www.youtube.com\/results?search_query=Mac+OS+X+10.1+Puma<\/a><\/p>\n\n\n\n Mac OS X 10.2 Jaguar introduced Quartz Extreme graphics acceleration, iChat, and Address Book, making the system feel significantly more modern and responsive. It helped establish Mac OS X as a stable mainstream operating system. It ran on PowerPC Macs such as later iMac G3 models and Power Mac G4 systems. The name \u201cJaguar\u201d continues Apple\u2019s big cat naming tradition, symbolizing power and speed. Watch here: https:\/\/www.youtube.com\/results?search_query=Mac+OS+X+10.2+Jaguar<\/a><\/p>\n\n\n\n Mac OS X 10.3 Panther brought major usability improvements such as Expos\u00e9 for window management, Fast User Switching, and FileVault encryption. These features made multitasking and security more accessible to everyday users. It supported PowerPC Macs like the iMac G4, PowerBook G4, and Power Mac G4. The name \u201cPanther\u201d reflects agility and strength, continuing the feline naming convention. Watch here: https:\/\/www.youtube.com\/results?search_query=Mac+OS+X+10.3+Panther<\/a><\/p>\n\n\n\n Mac OS X 10.4 Tiger introduced Spotlight search, Dashboard widgets, and Automator, significantly improving productivity and system navigation. It also marked the beginning of Apple\u2019s transition to Intel processors, supporting both PowerPC and early Intel Macs. Compatible systems included the iMac G5, Power Mac G5, and early Intel iMac and MacBook Pro models. The name \u201cTiger\u201d represents strength and capability. Watch here: https:\/\/www.youtube.com\/results?search_query=Mac+OS+X+10.4+Tiger<\/a><\/p>\n\n\n\n Mac OS X 10.5 Leopard introduced Time Machine backups, Spaces virtual desktops, and a redesigned Finder, making it one of the most feature-rich releases. It was also the last version to support PowerPC Macs, fully transitioning Apple to Intel hardware. It supported iMac G5 systems as well as early Intel Macs like the MacBook and iMac (2006+). The name \u201cLeopard\u201d continues the big cat naming series. Watch here: https:\/\/www.youtube.com\/results?search_query=Mac+OS+X+10.5+Leopard<\/a><\/p>\n\n\n\n Mac OS X 10.6 Snow Leopard focused almost entirely on performance, stability, and efficiency rather than new features, introducing full 64-bit support and Grand Central Dispatch. It dropped PowerPC support entirely and ran only on Intel Macs such as MacBook (2006+), MacBook Pro, Mac mini, and iMac models of the time. The name \u201cSnow Leopard\u201d represents refinement of Leopard rather than a new direction. Watch here: https:\/\/www.youtube.com\/results?search_query=Mac+OS+X+10.6+Snow+Leopard<\/a><\/p>\n\n\n\n OS X 10.7 Lion introduced major interface changes inspired by iOS, including Launchpad, Mission Control, and multi-touch gestures. It also brought the Mac App Store as a central software distribution method. It ran on Intel Macs such as MacBook Air (2008+), MacBook Pro (2007+), and newer iMac models. The name \u201cLion\u201d continues Apple\u2019s big cat naming tradition. Watch here: https:\/\/www.youtube.com\/results?search_query=OS+X+10.7+Lion<\/a><\/p>\n\n\n\n OS X 10.8 Mountain Lion expanded Apple ecosystem integration with Notification Center, Messages, Reminders, and deeper iCloud syncing. It further aligned macOS with iOS design principles. It supported Intel Macs such as MacBook Air (2010+), iMac (2007+), and Mac mini (2009+). The name reflects a refined version of Lion rather than a completely new direction. Watch here: https:\/\/www.youtube.com\/results?search_query=OS+X+10.8+Mountain+Lion<\/a><\/p>\n\n\n\n OS X 10.9 Mavericks was the first free macOS upgrade and introduced power efficiency improvements like App Nap and compressed memory. It marked Apple\u2019s shift to California-based naming, with \u201cMavericks\u201d referring to a famous surfing location in California. It supported Intel Macs from around 2007 onward, including iMac, MacBook Pro, and Mac mini models. Watch here: https:\/\/www.youtube.com\/results?search_query=OS+X+10.9+Mavericks<\/a><\/p>\n\n\n\n OS X 10.10 Yosemite brought a major visual redesign with a flatter interface and introduced Continuity features for seamless use between Mac and iPhone. It modernized macOS design language significantly. It supported Intel Macs such as MacBook Air (2011+), Mac mini (2010+), and iMac (2009+). The name comes from Yosemite National Park in California. Watch here: https:\/\/www.youtube.com\/results?search_query=OS+X+10.10+Yosemite<\/a><\/p>\n\n\n\n OS X 10.11 El Capitan refined Yosemite with performance improvements, Metal graphics support, and Split View multitasking. It focused on stability and system optimization rather than major new features. It supported Intel Macs such as iMac (2009+), MacBook (2009+), and MacBook Air (2010+). The name refers to El Capitan, a rock formation in Yosemite National Park. Watch here: https:\/\/www.youtube.com\/results?search_query=OS+X+10.11+El+Capitan<\/a><\/p>\n\n\n\n macOS 10.12 Sierra introduced Siri on Mac, Apple Pay in Safari, and Auto Unlock with Apple Watch, strengthening ecosystem integration. It also officially renamed OS X to macOS. It supported Intel Macs such as MacBook and MacBook Pro (2010+), MacBook Air (2010+), and iMac (2009+). The name refers to the Sierra Nevada mountain range in California. Watch here: https:\/\/www.youtube.com\/results?search_query=macOS+10.12+Sierra<\/a><\/p>\n\n\n\n macOS 10.13 High Sierra focused on internal improvements, introducing the APFS file system and Metal 2 graphics technology. It improved performance, storage efficiency, and security without major visual changes. It supported Intel Macs like iMac (2009+), MacBook Pro (2010+), and MacBook Air (2010+). The name reflects an evolution of Sierra rather than a new concept. Watch here: https:\/\/www.youtube.com\/results?search_query=macOS+10.13+High+Sierra<\/a><\/p>\n\n\n\n macOS 10.14 Mojave introduced Dark Mode, Dynamic Desktop, and improved file organization with Stacks. It also reduced support for older Intel Macs, focusing on newer hardware. It ran on MacBook (2015+), MacBook Pro (2012+), and iMac (2012+). The name comes from the Mojave Desert in California. Watch here: https:\/\/www.youtube.com\/results?search_query=macOS+10.14+Mojave<\/a><\/p>\n\n\n\n macOS 10.15 Catalina removed all 32-bit app support, introduced Sidecar for using iPad as a display, and added Screen Time to Mac. It marked a major software modernization step. It supported MacBook Air and Pro (2012+), iMac (2012+), and newer Intel Macs. The name refers to Santa Catalina Island in California. Watch here: https:\/\/www.youtube.com\/results?search_query=macOS+10.15+Catalina<\/a><\/p>\n\n\n\n macOS 11 Big Sur introduced a major visual redesign and marked the transition to Apple Silicon with the M1 chip, enabling better performance and iOS app compatibility. It supported Intel Macs (2013+) and all Apple Silicon Macs. The name comes from the Big Sur coastal region in California. Watch here: https:\/\/www.youtube.com\/results?search_query=macOS+Big+Sur<\/a><\/p>\n\n\n\n macOS 12 Monterey focused on cross-device productivity features like Universal Control and AirPlay to Mac, enhancing workflow between Apple devices. It supported Intel Macs (2015+) and Apple Silicon Macs (M1 and newer). The name refers to Monterey Bay in California. Watch here: https:\/\/www.youtube.com\/results?search_query=macOS+Monterey<\/a><\/p>\n\n\n\n macOS 13 Ventura introduced Stage Manager for multitasking, Continuity Camera, and system-wide improvements for productivity. It reduced support for older Intel Macs while focusing more on Apple Silicon. It runs on MacBook Air (2018+), MacBook Pro (2017+), and Apple Silicon Macs. The name refers to Ventura, a coastal city in California. Watch here: https:\/\/www.youtube.com\/results?search_query=macOS+Ventura<\/a><\/p>\n\n\n\n macOS 14 Sonoma added desktop widgets, Game Mode, and improved Safari profiles, focusing on usability and personalization. It continues Apple\u2019s push toward Apple Silicon optimization. It supports MacBook Air\/Pro (2018+), iMac (2019+), and Apple Silicon Macs. The name comes from Sonoma County, California wine region. Watch here: https:\/\/www.youtube.com\/results?search_query=macOS+Sonoma<\/a><\/p>\n\n\n\nMac OS X 10.1 Puma (2001)<\/h3>\n\n\n\n
Mac OS X 10.2 Jaguar (2002)<\/h3>\n\n\n\n
Mac OS X 10.3 Panther (2003)<\/h3>\n\n\n\n
Mac OS X 10.4 Tiger (2005)<\/h3>\n\n\n\n
Mac OS X 10.5 Leopard (2007)<\/h3>\n\n\n\n
Mac OS X 10.6 Snow Leopard (2009)<\/h3>\n\n\n\n
OS X 10.7 Lion (2011)<\/h3>\n\n\n\n
OS X 10.8 Mountain Lion (2012)<\/h3>\n\n\n\n
OS X 10.9 Mavericks (2013)<\/h3>\n\n\n\n
OS X 10.10 Yosemite (2014)<\/h3>\n\n\n\n
OS X 10.11 El Capitan (2015)<\/h3>\n\n\n\n
macOS 10.12 Sierra (2016)<\/h3>\n\n\n\n
macOS 10.13 High Sierra (2017)<\/h3>\n\n\n\n
macOS 10.14 Mojave (2018)<\/h3>\n\n\n\n
macOS 10.15 Catalina (2019)<\/h3>\n\n\n\n
macOS 11 Big Sur (2020)<\/h3>\n\n\n\n
macOS 12 Monterey (2021)<\/h3>\n\n\n\n
macOS 13 Ventura (2022)<\/h3>\n\n\n\n
macOS 14 Sonoma (2023)<\/h3>\n\n\n\n
macOS 15 Sequoia (2024)<\/h3>\n\n\n\n