4DIAC is a framework for distributed industrial automation and control. It aims to provide an open, IEC-61499-compliant basis that lets the user establish a distributed industrial automation and control environment based on the targets' portability, configurability, and interoperability.
4K Video Downloader is a video and audio downloader for YouTube, Vimeo, Facebook, Dailymotion, Metacafe, and other video-sharing services. It features video quality up to 4k resolution, FLV, MP4, and MKV support, extraction of audio to the MP3 format, and a "Smart Mode" for fast downloads.
4Pane is a four pane detailed-list file manager for Linux. It is designed to be fully-featured without bloat, and aims for speed rather than visual effects. In addition to standard file manager things, it offers multiple undo and redo of most operations (including deletions), archive management including 'virtual browsing' inside archives, multiple renaming/duplication of files, a terminal emulator, and user-defined tools.
6's Keen TV Listings Scanner is a program that accepts a list of your favourite TV shows, movies, actors, and actresses, and running from crontab, performs a daily search for them in gist.com's TV listings search engine, and emails you a summary of the results. You get a daily email listing 15-20 programs that you'd probably like to watch, and, of course, gist.com lets you exclude channels that you cannot access.
6's Spiffy AudioGalaxy Query Tool is a package that automates queries to the AudioGalaxy music sharing system. It enables you to queue any song (at a minimum configurable bitrate) with one command line, even if the AudioGalaxy site is busy or unresponsive. It will also allow you to queue most full albums with one command line, by going on AllMusic.Com to look up the song list, and queueing up each of the songs listed.