What makes macOS Sierra stand out is how effectively it unifies the Apple ecosystem through features like Universal Clipboard, Auto Unlock via Apple Watch, and seamless iCloud Sync for Desktop and Documents. With Siri arriving on the Mac, along with intelligent on-device machine learning in Photos, Sierra adds practical, actionable AI that fits naturally into everyday workflows. At the same time, additions such as Universal Tabs, Picture-in-Picture (PiP), and Optimized Storage noticeably improve the overall UI/UX and help the system feel more efficient and responsive. As a $0 free upgrade, Sierra also simplifies desktop management and keeps onboarding frictionless, delivering strong overall value while reinforcing Apple’s deep hardware-software integration. Review collected by and hosted on G2.com.

There’s nothing I dislike about it, but there are some limitations in how it can be used. Review collected by and hosted on G2.com.