mozillaのWSYIWYGなHTMLエディタ Nvu

Nvu is based on Gecko , the layout engine inside Mozilla ; it's a super-fast, very reliable, standards conformant engine maintained on a daily basis by a wide community of developers. Its remarkable support of XML, CSS and JavaScript offers the best authoring platform on the market. Its architecture based on XUL makes it the most extensible editing tool ever.

XULアプリケーションでGeckoベースだそうで。
普段エディタ手書きでHTMLを記述してる身としてはあんまり必要無いものだけど一応メモとしておいておこう。

Frontpageなんかで作られるよりよっぽどマトモなHTML吐いてくれそうだし。
知らんけど。