12 New macOS Sierra Features Worth Upgrading For

macOS Tabs

You can now put multiple windows of any program into tabs. This is built-in to macOS Sierra so developers don't need to make changes to support it.

Just like how you can use tabs in Safari on OS X El Capitan or in Chrome, you can now put multiple windows into one using tabs in macOS Sierra.

With OS X El Capitan, you can only use tabs inside apps that support them, like Chrome, Safari and others with the built-in functionality.