KDE are working on a product (Vivaldi tablet): http://rhombus-tech.net/community_id...e_tablet/news/ And they just launched the Improv development board: https://makeplaylive.com (see also https://makeplaylive.com/#/who-we-are/our-commitments ). The tablet doesn't move fast for them, but not because they have open development or their code is open. It's just a lot of work. Openness doesn't hinder their progress.