We're great for when you need to fill-out or sign a document. You can upload it (we support all common file types), sign it, fill it in, and fax it within minutes. Much faster than printing, signing, and scanning.

I hope you get to give it a try soon. Let us know what you think!

Is it possible to print directly to the fax service? That's what we've did once for a very similar service: Provide a server using the Internet Printing Protocol (http://en.wikipedia.org/wiki/Internet_Printing_Protocol) that clients configure as remote printer (this works fine in Windows and Linux, we didn't test OS X at this time). The things that a user has printed are stored in an "outbox", where the user can just click on an item and specify where it should be sent. The advantage of this method is that you don't need the upload step and that you are able to support any application (without requiring users to convert the data to PDF first).

I just tried that out. Online PDF form filling, signing, and saving would be a worthwhile product in itself in my opinion.

Edit: And of course there are a couple of those sites already (just for forms). All of which could use some polishing.