The mod_w2ml Apache module is a W2ML processor. W2ML (Web 2 Markup Language) is a declarative markup language that extends XHTML with XML namespaces to make it possible to edit Web pages in the browser. W2ML handles server-side inclusion, access control, element-level editing, and templatized editing (WYSIWYG editing of structured data like list items, guestbooks, forums, and more). W2ML is processed on the server side and requires no browser plugin.
hOCR is a file format for representing the output of Optical Character Recognition (OCR) programs such as OCRopus. OCR programs are not perfect at recognizing text, so human editing is often necessary. moz-hocr-edit provides a line-by-line user interface for people to edit and proofread hOCR documents.
mozCC is an extension for browsers which are based on Mozilla Gecko (Mozilla Suite, Mozilla Firefox/Firebird, and Netscape) which provides an easy way to view Creative Commons license metadata embedded in Web pages. mozCC displays license information about the current page in the status bar using the Creative Commons' license attribute icons. It also provides a button on the toolbar which displays the embedded license's RDF in more detail.
msg-rpc provides bidirectional RPC support over a simple message interface such as WebSocket. Tere are WebSocket examples based on socket.io and sockjs. It just has a simple sendMessage/onMessage interface, with no other dependencies. It supports not only normal RPC, but also RPC Service, which makes RPC pushable (i.e. the server can also send a request to the client and expect some kind of response).