http://masterwcom.blogspot.com/
LEO--Literacy Educatio Online -- Guide to writing, grammar, punctuation online: http://leo.stcloudstate.edu/
OWL--Online Writing Lab--http://owl.english.purdue.edu/
Visual Thesaurus:
http://www.visualthesaurus.com/?ad=rss
Onelook Reference Collection:
http://onelook.com/
Freemind:
http://freemind.sourceforge.net/wiki/index.php/Main_Page
XMind:
http://xmind.net
Invention / Brainstorming:
http://www.csuohio.edu/academic/writingcenter/invent.html
Persuasive Writing: