Like someone stated, it's a dev tool that will not likely need to be bundled with your end product. I use Emacs, which is also GPL, as do other people, with no

Like someone stated, it's a dev tool that will not likely need to be bundled with your end product. I use Emacs, which is also GPL, as do other people, with no hinderance from a license point of view. If I were doing Light Table, I'd use GPL too - It also does not preclude someone from writing their own plugins and selling them as an add-on. I would assume there will be a way for easy/seamless plugin installation into the main program.