General Graphics User Interface is an effort to produce a common graphical user interface for any command line program. It uses a wizard-like input front end to collect the information needed. It then calls the desired program automatically with all the necessary options. The user is able to point and click on various options and select them in a convenient way. In order to create a new user interface, a user doesn't need to know a programming language, since there is a graphical editor for new GGUI "scripts".
libtholoura is a text-image distortion library, which is useful for sites that want to ensure that a human (and not a bot) is viewing pages. It is optimized to produce images of strings distorted in a way that makes it impossible for an OCR to read, but humans can. The library takes a string (preferably ASCII) string and is able to dynamically produce PNG indexed images. The distortion filters are external plugins.
Jubler is a tool for editing text-based subtitles. It can be used an an authoring software for new subtitles or as a tool to convert, transform, correct, and refine existing subtitles. Some of its key features are subtitle preview, smooth cooperation with MPlayer, full subtitle editing, and ASpell support.
JavaPlot is a library that can be used as a way to create gnuplot plots on the fly through pure Java commands. In contrast with other common gnuplot Java libraries, it uses Java structures to store the various plot parameters, including datasets. Moreover, it is flexible enough to give special parameters to gnuplot, even if the library does not yet support it. It uses Java's Exceptions to inform the user if something went wrong.
Jupidator is a framework to automate the updating procedure of an application. It can be used on all major platforms. It makes it easy to integrate the self-update feature to any program in any language. It has various levels of file description granularity, and the developer can work with file groups or even single files, while keeping track of the change-log in a user friendly manner. It is based on XML for describing files and Swing or a console to display visuals.
CaféPorts is a frontend written in Java for MacPorts. MacPorts is a community-driven effort that aims to ease the compilation and distribution of open source projects on Mac OS X. With CaféPorts, it is easy to search, install, and in general manipulate these projects, with a Mac-friendly GUI user interface.