Spellingly

Spellingly provides an easy way of spelling out words, by showing the spelling for each letter in a word. To begin, just type something, and the corresponding spellings will appear.

To use it, just choose which spelling converter you want to use and type. There are preferences for choosing whether the spelling appears on top or below, if the spelling and/or text is written in capital letters, and if the spellings are coloured or not. You can also bookmark spellings and see them later.