I wouldn't call that a "Haskell based browser". 1500 lines of Haskell against maybe 300 KLOC (guessed) of webkit alone. That's not "Haskell based", that's only using Haskell as a glue.
The same goes for uzbl, too, of course. Things like the Grail Browser [1] (a Python webbrowser, including the possibility to run client-side python-code - but sadly obsolete and not maintained anymore, as far as I can tell) are so much cooler than just tying webkit to GTK using $LANGUAGE.
I mean, it's not like HTML layout engines or JS-interpreters are somehow impossible to write from scratch.
The same goes for uzbl, too, of course. Things like the Grail Browser [1] (a Python webbrowser, including the possibility to run client-side python-code - but sadly obsolete and not maintained anymore, as far as I can tell) are so much cooler than just tying webkit to GTK using $LANGUAGE.
I mean, it's not like HTML layout engines or JS-interpreters are somehow impossible to write from scratch.
[1] http://grail.sourceforge.net/