Have you seen the "Year Progress" charts on twitter? What if you can create any chart type - Bar, sparklines, tables and use it right inside the twitter text box?
There are a number of rich text edtors, but they style using CSS. This means that their output can not be used in simple text fields, for example on Twitter and Facebook.
Our WYSIWYG editor uses only unicode chars and can be used in aΝnΝy ππ ΄ππ π±πΎπ .