Lightworks, a non-linear video editor (NLE) with a long history that was announced as going open-source and multi-platform two years ago, is preparing for a release on Monday, May 28th after several delays. While the debut will be Windows-only, developers EditShare plan on making OS X and Linux versions available shortly afterwards. The program will be unique in being the only open-source, multi-platform NLE video app. A pro version will also be made available.