Writing Global English
http://www.audiencedialogue.net/english.html

Audience Dialogue
2007

Abstract:

Unfortunately, there seems to be no such thing as simplicity-checking software - even remotely like the description above. Audience Dialogue tried to persuade a few software developers to make their fortunes by writing this software, but with no success so far. In the meantime, there are a few widely available tools to use.