StupidZombie is a tool that can be used to "ping" several directories to notify then about a blog update. It does not need to be run from a Web page like Blogger or Wordpress. You can run StupidZombie from a cron job or using Java WebStart. Also, StupidZombie has a simple tag generator from directories that support it.
jbookshelf is an electronic book collection organizer and reader. It supports collecting plain files (text, HTML, PDF, etc.), has basic collection search, fulltext collection search (planned), internal viewers for plain text, HTML, RTF, and PDF, notes and citations, book categories, FB2 support (planned), and portability (removable drives support) (planned).
MammothCopy is a simple, Java-based tool to copy large or many files from one computer on the Internet directly to another. This is also possible with tools like WinSCP and an SSH server, but those are too complex for normal users. MammothCopy is geared towards parents wanting to send photos to their kids, or professionals who want to transfer huge files (only limited to the receiving end’s hard disk space).