This is a revisit, as I have flagged this online keyboard before.

If you and/or learners want to type a text in a foreign language with appropriate characters (accents, umlauts etc.) that are not present on a keyboard, head to TypeIt.org.

TypeIt hosts multi language keyboard for 15 European languages...

• Czech
• Danish
• Dutch
• Finnish
• French
• German
• Hungarian
• Italian
• Polish
• Portuguese
• Romanian
• Russian
• Spanish
• Swedish and
• Turkish

...as well as

• Currencies
• International Phonetic Alphabet (IPA) and
• Symbols.

Simply...

• select a language from the menu on the left to load the relevant set of characters.
• Select/change the font
  and/or font size of the text
  and/or hover your mouse over a character to see its keyboard shortcut.
• Type/edit text in the box and then
• copy the completed text to a document, e-mail message, etc.

Try it out at http://www.typeit.org/.

Supported browsers include Firefox 3, Google Chrome, Internet Explorer 6/7/8 and Safari 3/4.