Roswell was by Jason Katims.
TaskJuggler is GPL-licensed -LRB- free software -RRB- project management software that runs under the Linux and Unix operating systems and is programmed in C++ using the Qt toolkit and KDE libraries .. Linux. Linux. GPL. GPL. free software. free software. project management software. project management software. Unix. Unix. Qt toolkit. Qt ( toolkit ). KDE. KDE. The TaskJuggler Project was started in 2001 by Chris Schlager .. Early releases provided a command line tool that generated HTML reports .. command line. command line. From August 2005 to July 2010 , the package also provided a graphical user interface based on the KDE libraries .. KDE. KDE. TaskJuggler III was released on 5 July 2010 .. It is a completely re-implemented version of the TaskJuggler 2.x series and written in Ruby .. Ruby. Ruby ( programming language ). The graphical user interface from the 2.x version has not yet been ported to TaskJuggler III ; TaskJuggler III documents , which are plain text files , are edited with a text editor and processed on the command line .. command line. command line