The goal of the dtfs project is to implement a log-structured file system within the Linux 2.2.x kernels. dtfs has a filesystem-independent core that provides general services required for a log-structured file system and uses a "traditional" file system implementation to do the actual filesystem/VFS operations. The tradtional file system of choice is currently Linux' ext2 file system. Using the ext2 file system together with the log-structured core should both reduce the implementation work required to be done and facilitate the future maintainence of dtfs.
Dvipdfm is a DVI to PDF translator. Its features include TeX \special's that approximate the functionality of the PostScript pdfmarks used by Adobe Acrobat Distiller, the ability to include PDF files and JPEG files as embedded images, support for both Type1 and PK fonts, support for arbitrary linear graphics transformations, a color stack accessible via \special's, partial font embedding and stream compression for reduced output file size, native, portable graphics via TPIC \specials, balanced page and destination trees for improved reader access on very large document files.
DX0 is a PHP library that generates Dynamic HTML specific to the visitor's browser. DX0 focuses on generating tight, compact DHTML. DX0 allows reusable cross-browser widgets to be stored in a binary pickle, so scripters in any of the supported languages can use them. IE4+, NS4+, and Mozilla M14+ have all been tested and work well.