Ruby projects include:
Web projects consists mostly about articles on CSS, but I also have a page on bookmarklets.
CSS articles include:
Mozilla projects, mostly bitrot. Includes once popular extensions such as the Links Sidebar Panel and the Link Toolbar.
FreeBSD is my operating system of choice. I have a small collection of FreeBSD information including a dated article on how to use Windows swap in FreeBSD.
SXR will be a tool for cross-referencing information in books either in a single book, or throughout a series of books, Someday. Until then, you can read my thoughts on SXR.