Free transfer for files up to 2GB for free, password files, customize how many times each file can be downloaded and how many days it will be available, ZIP and encrypt multiple files.
Forms are created in Google Docs spreadsheets via the share tab, select "to fill out a form." Multiple-choice or free-response questions can be added as you wish, plus the email addressed of recipients.
Adobe Share allows you to share, publish and organize your documents, e.g. embed a Flash preview of your document on any website. OK, it's a beta, doesn't seem to work for me.
Clipperz is a free and anonymous online password manager. Local encryption within the browser guarantees that no one except you can read your data. Nothing to install.