Lexeduct
This is a web-based installation of Lexeduct.
By default it is in "live mode", meaning, whenever you change the text in
the left-side textbox, or whenever you change one of the filters, the
text in the right-side textbox will automatically be updated with the
new input text and settings.
When you select a filter, inputs will appear below it allowing you to
configure it. Several filters need to know the set of characters that
they should operate on, for example.