Lektor is a static file content management system originally written by Armin Ronacher. What makes Lektor stand out among the myriad of static site generators is that it has an admin GUI. By defining a data model an admin interface is automatically generated so you can edit your site with ease.
I have contributed various bug fixes as well as video thumbnail support, that I wanted for my own traveling diary. Since december 2018 I am a maintainer of the Lektor project and all its side projects.