HernyOne...?! It's in the name!
HernyOne is a SINGLE (one) file containing the source and the content of the website as well as the administration. Imagine, you have an HTML site - a manual, a frontpage, a linklist or something like that - and you want to edit this page without any external editor. Then HernyOne is perfect for you. HernyOne is HTML page and content in one file.