Hoplax is a power user tool to store bookmarks in text files and manage them efficiently. Bookmarks stored in Hoplax are easy to edit and search with normal Unix tools and editors. They are easy to synchronize with git/svn/darcs/etc. Bookmarks can be categorized easily into files, and you can choose to not synchronize a file to a computer, e.g. confidential company bookmarks to home computers. The filtering is smarter than the browser's location bar. Keyword bookmarks with multiple parameters and auto-completion are supported.
Chyrp is a blogging engine designed to be very lightweight while retaining functionality. It has powerful theme and extension engines, so you can personalize it however you want. The code is well-documented, and it has a very strong structure that's loosely based on the MVC design pattern. Chyrp allows importation from several different blogging engines and uses a system called "feathers", which are basically templates for custom posts.
Html Writr is an innovative system that allows users with little to no technical knowledge to edit static HTML files. It is very easy to setup, and requires no database to use. The editing experience is simplistic but full featured, using nicedit for the WYSIWYG editor, and allowing users to edit the page title, meta description, and meta keywords. Preparing HTML files for the HTML writer to edit is very quick; just a couple of lines of code and you're done.
Symbiose is a WebOS, a Web desktop which is accessible from any Web browser. It works like Linux, using the same filetree, UI management, software update system, and commands (ls, cd, etc.). It offers file management (sending/downloading, basic operations, copy-and-paste, drag-and-drop, etc.), a text editor with syntax highlighting and automatic indentation, a music and video player, a word processor, an archive manager, management of system parameters (such as appearance, users, quotas, interfaces, and software sources), a software center, an updates manager similar to apt-get, FTP server, DropBox, and Google Drive mounting (with integration of these services in Symbiose storage), and more.