Safari is the default browser for iOS devices, but is also available for Android and Windows. Version for Windows isn't under an active development.
Safari is able to block pop-ups and you can easily turn off/on this option, also support private browsing. Unfortunately, there are not extensions for parental controls.
Safari for Windows includes modern features such as tabbed interface (drag&drop support), it integrates a download manager, you can zoom on page and customize default fonts. As default search engines, Safari doesn't let users to add their custom web address of a search engine and offers an option to choose between 2 major search engines.
It can autofill forms in web pages and as extensions offers fewer, but popular add-ons available to browse and install through their website.
This browser doesn't support omnibox search, synchronization and there aren't available themes or skins to be installed from their marketplace.
The Windows version of Safari isn't constantly developed and i would not recommend it unless you are an active user of Safari on Mac and you want to use it on Windows occasionally.