I mean, I like Firefox, but I’d love to see Vivaldi based on Firefox/Gecko. There’s Floorp, which is similar in some ways but it’s more like an Edge built on Firefox than Vivaldi.
Edit: Thank y’all for your answers. :D
I want to link !@bdonvr@thelemmy.club 's post because it is a similar quesion. https://thelemmy.club/post/718914
They both are of very similar age actually. The old Netscape rendering engine originated in the early 90s, but Gecko was a rewrite from scratch that was first used in a browser in 1998.
Blink is based on KHTML which is based on khtmlw, which was written at some point in the mid-90s, but as well saw a complete rewrite in 1999.
True, but on the chromium side, the Chromium Embedded Framework and Electron made using chromium as a basis for your app a lot easier. There are no equivalent in the gecko side with similar functionality and ease of use. Now gazillion of apps runs some form of chromium via CEF or electron. If the app’s size is around 200-500MB, chance that it’s using chromium under the hood.