Contents of Types of spell checkers

Well-known user interface, evolved from tools within word processors "red squiggly line"

Tools within web browsers

context sensitive checking tools

sample of Word spell checker

Google toolbar spellchecker

sample of Firefox with squiggly red line

spell checking with online apps

Assistive technology tools that work across most applications

Read&Write 9 toolbar

rich text editor with spell checker

Ginger context sensitive error checker