Someone arrived here yesterday after searching for “word processor for nokia 810.” Here are a few suggestions:
The N810’s built-in “Notes” application is good enough for note-taking and rough drafts. You have your choice of fonts, as well as italic, bold, and underline styles. You can also do bullet lists and numbered lists. I’ve used it while offline to write blog posts, which I then copied and pasted here.
One of the advantages of using Notes over Abiword or Google Docs is that the Notes application is optimized for the tablet’s screen resolution, so you don’t have to squint to read your own work.
You can save Notes either as HTML or text files. The HTML files will open in your desktop browser.