The most common operating system worldwide as of 2025 is Android, holding around 44-46% of the global market share across all device types. Microsoft Windows follows with about 25-27% market share overall, but dominates desktop computers with roughly 70% share. For mobile devices, Android leads with approximately 72% of the smartphone market, while iOS holds around 28%. On desktops and laptops, Windows has around 70% share, followed by macOS at about 9%, and Linux around 4%. Linux dominates in server and supercomputer environments but has a smaller market share on personal devices.
Summary by device category:
- Mobile: Android (~72%), iOS (~28%)
- Desktop/Laptop: Windows (~70%), macOS (~9%), Linux (~4%)
- Overall (all devices): Android (~44-46%), Windows (~25-27%), iOS (~16-18%)
So, while Android is the most popular OS globally, Windows remains the most common OS for personal computers.