I ticked Open Office on the form, but my all time favourite would be RoughDraft, a very light RTF editor created by Richard Salsbury (
http://www.salsbury.f2s.com/rd.htm). Richard, himself, is a writer, and he created RoughDraft for writers. It's basically a no frills editor that will save in either TXT or RTF (Rich Text Format), or it can create a simple HTML page for you. The beauty of the HTML editor is that it makes an extremely light file with only enough HTML code to make show up, properly formatted, on the computer screen -- not like programs like front page that use a tun of unnecessary code that makes a file many times the size of the original. It has a good spelling checker, which gives you the option of either British or American spelling, and it has natural tie-in link to an outside freeware program called Wordweb, a very handy dictionary/thesaurus.
While Roughdraft is available, Richard Salisbury has left off developing it. It's only available for the Dos/Windows environment, though it's said it can be made to work partially on LINUX via Wine. Because of those limitations, I'm stuck with Open Office.