KClipSpellApplet is a KDE Kicker applet that permits you to spellcheck any text you can put into the clipboard, which means you can spellcheck from any application, including non-KDE applications. To use, right-click on kicker panel and select Add -> Applet -> Clipboard Spellcheck. A spellcheck button appears in your kicker panel. Now highlight any text, press Ctrl-C to make sure it gets into the clipboard
and click the spellcheck button in the kicker panel. In a moment, the KSpell dialog should appear. Make corrections and click OK. The corrected text is back in the clipboard.
Note that if there are no spelling errors, the KSpell dialog will flash on the screen and disappear.
KClipSpellApplet is also available via KDE CVS in the kdenonbeta module.