a html to txt converter ( for converting bookmark favorite html exported files)
Can't you just rename the extensions?
a html visual editor(does one exist?)
You mean a WYSIWYG editor? There are many; for example, Netscape Composer is included with the Netscape browser. A list of some is on this page of the Google directory.
a "whats-the key code for the character I want" utility(does one exist?)
In Windows, the Character Map: Start » Programs » Accessories » System Tools » Character Map
(Cacher) Vous n'arrêtez pas de perdre au temps? Les abonnés peuvent activer les Vacances Automatiques pour mettre un jour de vacance lorsquils risquent de perdrent au temps. (pauloaguia) (Montrer toutes les astuces)