Apps with 'No database needed' feature
Grav is an easy to use, yet powerful, opensource CMS that requires no database. In a nutshell, installing Grav is a matter of unzipping the file.
Hexo is a fast, simple and powerful blog framework powered by Node.js which have extensive plugins selections for a Static Site Generator and a great communities.No screenshots yet
Microservice based webmail client built with ReactJS and Spring.
Minimalistic webmail client which currently has the main features of any other mail client (read mail, compose mail, organize mail folders...).
Smoothly Share Content Between Devices!.
An entire wiki in a single PHP file. Intended for small - medium sized wikis. Supports themes, multiple users, and uses a module-based approach to allow features to be added and removed at will.