The Software Freedom Law Center (SFLC) today announced that it has filed two more copyright infringement lawsuits on behalf of its clients, two principal developers of BusyBox, alleging violation of the GNU General Public License (GPL). The defendants in the lawsuits are Xterasys Corporation and High-Gain Antennas, LLC. BusyBox is a lightweight set of standard Unix utilities commonly used in embedded systems and is open source software licensed under GPL version 2.