Loop
Loop is a Mac app that turns any file into your own branded link, and follows every open, page and signature.
Loop sends a document as your own branded link that people read, mark up and sign in the order you set, with reminders you send in one click, and a signed copy carrying a record of every signer. Along the way you see who opened it and how long they spent on each page. Signatures are typed names, simple and quick. It is $49 once.
DocuSign
DocuSign is an e-signature platform for sending agreements to be signed, with templates, identity options and integrations.
You prepare an agreement, place fields and send it to be signed, and signers need no account. Personal and Standard include simple electronic signatures and reusable templates. Standard adds your own branding, shared templates and commenting, and advanced and qualified signatures come through Enhanced plans and add-ons. Plans run from $120 a year for Personal to $480 a user a year for Business Pro, billed yearly, on its pricing page.