Mailatt is a portable Unix/Linux script for sending mail with MIME attachments. The Content-Type and Content-Transfer-Encoding are guessed, but can be overruled with command line options. There is support for HTML mail and non-ASCII character sets.
picbulk sends images to Picasa or to email addresses specified. Images can be shrunk on the fly.
A CD ripping and conversion GUI.
A Java class library for importing and creating PDF documents.