There are a lot of online productivity suites out there these days. Google has probably made the biggest news as they have put together a collection of them (word processor, spreadsheet, presentation software, etc) after buying several companies. But Google certainly isn’t the only one. I have previous mentioned a basic collection of similar programs by AJAX13. A more full-featured collection is from ThinkFree:
The award-winning ThinkFree Office is a Microsoft® Office compatible application suite comprised of word processing, spreadsheet, and presentation graphics software-all usable online and off.
I haven’t done much other than signing up for a free account and then playing around a bit, but it looks promising. Check it out for yourself.