Apple Safari uses the WebKit engine. WebKit is a free and open-source web browser engine that is used by many different web browsers, including Apple Safari, Google Chrome, and Opera. WebKit was originally developed by Apple, but it is now maintained by the WebKit Consortium, a group of companies that are committed to developing a high-quality web browser engine.
Blink is a web browser engine that was developed by Google as a successor to WebKit. Blink is used by Google Chrome, Microsoft Edge, and Opera.
Dlink is a web browser engine that was developed by Opera. Dlink is no longer in development.
Quantum is a web browser engine that was developed by Mozilla as a successor to Gecko. Quantum is used by Firefox.
Here is a table that summarizes the information about the different web browser engines:
| Web browser engine | Developer | Browser(s) that use it |
| — | — | — |
| WebKit | Apple | Apple Safari, Google Chrome, Opera |
| Blink | Google | Google Chrome, Microsoft Edge, Opera |
| Dlink | Opera | Opera (no longer in development) |
| Quantum | Mozilla | Firefox |