yappa-ng is an easy to use online PHP photo gallery. It has a comfortable and elaborate album-oriented photo album administration Web interface. Each picture can be viewed in many different sizes with resizing created automatically on the fly. It has complete user selectable language support, and supports password protected albums, hit counters for albums and images, album info, image captions, gallery overview, different themes, and a 'Top 10 images' ranking system for each photo album.
yawiki is a wiki system strives to be a perfect place for working together and sharing information. The syntax for the wiki system is really simple to learn. Getting started with a wiki system is easy. It features versioning of every page, and the history can be viewed to restore old versions. A page can be restricted so that it can only be edited by users. Every user can add pages to a personal list of bookmarks. Different themes are supported. A search engine (Jakarta Lucene) is integrated.
The yawiki engine is the underlying rendering engine of the yawiki application. It is a standalone rendering engine to convert wiki markup into HTML. It can be included in any application. So far it covers three different markups: BBCode, the old yawiki markup, and the Creole 1.0 specification.
Yaws is a WWW technology with capabilities similar to the combination of Apache with PHP and a database. Yaws runs faster, with smaller footprint, higher scalability, and higher reliability. Subjectively speaking, it uses a more beautiful technique to generate dynamic pages than other similar technologies.
yaydl (yet another youtube downloader) is a commandline-oriented tool that allows you to download videos from video sharing Web sites (currently YouTube, Myvideo, Dailymotion, Clipfish, video.google, Metacafe, Sevenload, and Vimeo). The use of external programs like mplayer or ffmpeg enables it to re-encode the videos or to rip the audio off a video.
yhttpd is an experimental, XML-configurable, light, very portable, multi-platform Web server written in C++ and a small subset of C. It runs on all operating systems that are POSIX compatible and use the GNU GCC C++ compiler from 3.1 and up with pthreads enabled. It is based on yChat socket and thread engines.