has been talked about for the past two years as an open-source video editor
and the Linux client was delayed multiple times
. Lightworks ended up beginning a very limited alpha
last month, but not everyone is happy.
Here's a new blog post
about how "Lightworks is not anywhere close to open-source." The statements made by a GNOME developer over Lightworks not being open-source and "most likely won’t be anywhere close to a truly open project" come down to the source code not being readily available yet, the source base at millions of lines of code is likely too massive, the open-source version is likely to be crippled compared to their professional (paid) versions, etc.
The author recommends using open-source alternatives like PiTiVi, OpenShot, and Kdenlive, albeit there isn't yet a really compelling open-source non-linear video editor from the community, especially one that could compete with Lightworks in the professional segment.