This is fantastic! Ever since I discovered jsLinux or more recently jor1k, I have been hoping for a complete x86 emulator in order to be able to run DOS.
According to the author, this project will be open-sourced once it'll be more polished and documented.
[1] http://bellard.org/jslinux/
[2] http://s-macke.github.io/jor1k/
Posting your own creations is allowed indeed :)
In this case, the news title was only "Quick Editor", and by clicking the link, there is no description at all, neither on the page or on the repository. Makes it difficult to know what is the intended purpose, it looks like it's only a small snippet of HTML with a textarea?