FreeSign is a free service for electronic signatures. You upload a document, mark where signatures and fields go, send it to the people who need to sign, and get back a completed, signed copy, all online and without printing or scanning anything.
It is built for the everyday paperwork that does not need an expensive enterprise contract platform: agreements, consent forms, simple contracts, permission slips and the like.
To send your first document, see sending your first document. To sign one someone sent you, see how to sign a document.