It's not duopoly, there is also WebKit, e.g. in Epiphany Browser.

Ladybird is a memory hog compared to Servo: https://fosstodon.org/@niutech/114139305720083599

Flutter is not native on any platform, it's just a canvas with painted custom controls. Nothing compared to lightweight native Win32 apps in VB6.

It has a much better language and works across platforms. these things have real value.

It used a language that few know and that has little local knowledge and support. It uses its own widgets and conventions to be cross platform instead of using native controls. These things are real downsides.

Have you tried NetBeans? It's more intuitive and snappier than e.g. Eclipse.

I did, very briefly. It did not compare to Intellij.

Try to do JNI development in Intellij, with debugging across languages like in Netbeans.

You can still run Visual Basic 6 in Windows 11 and compile programs like in '99. Windows is incredibly backwards-compatible.

There is also Open Watcom for FreeDOS.

If you worked on that code, could tou tell us something more about this technique? What do you think about the OP way of hacking the e-book contents?

RAM does matter, especially when you have web browser with multiple tabs opened at the same time. Sublime Text or Notepad++ are powerful, yet much more lightweight than Zed. Not to mention Vim/Emacs.

There are always: Vim and Emacs.

Sublime Text can run code from its UI too. IDE is much more full-featured, like VS vs VSCode or IntelliJ vs Fleet.