LyX is a document processor that encourages an approach to writing based on the structure of your documents, not their appearance. It is intended for people people who write and want their writing to look great without tinkering with formatting details, font attributes, or page boundaries. On screen, it looks like any word processor, but it uses the TeX engine for printed output and producing richly cross-referenced PDFs. It is stable and fully featured.
Karaoke con SMIL is a project to synchronize audio, text, and images and export the final result to SMIL, which can be played in multimedia players such as Real Player, Helix Player, Ambulant Player, etc. on several devices (computers, mobile phones, PDAs, etc.). In short, this application synchronizes the multimedia elements in a way similar to karaoke.
pdfrecycle creates a PDF file by composing pages from other PDF files. It can add PDF bookmarks and metadata, scale, rotate, and crop pages, and put multiple logical pages onto each physical sheet. pdfrecycle uses a simple text file format to define the layout and what pages to include. From this input file pdfrecycle creates a LaTeX file and then runs pdflatex to produced the PDF file.
Wyneken is a text processor that leverages several technologies to bring about a very professional looking document. Wyneken documents are written in a bbcode-style markup that gets converted into a LaTeX document. HeVeA, Latex2rtf, and latex-beamer are all used to bring you more functionality. In specific, HeVeA allows for the output of HTML and Ascii Text Files. Latex2RTF does the same for RTF files. latex-beamer is presentation software that sits under Wyneken Presentations.