Lightworks is a freemium non-linear editing system (NLE) for editing and mastering digital video. It was an early developer of computer-based non-linear editing systems, and has been in development since 1998. The development of an open-source version was announced on April 11, 2010. However, no source code of the program has been released. In July 2020, a Lightworks product manager confirmed that they "still hope to announce something in the future" about Lightworks' open source development.