[staticelf]

I like the idea of a new browser, but I won't switch from my beloved Firefox that has all the addons and stability I need.

Is it using webkit or something else?

[warpech]

It is using Blink (the same engine that powers Chrome), which started as a fork of Webkit. Blink is also used by Opera since 2013.

[Aoyagi]

Webkit/Blink.