Promo: cloudBRAT is free form information manager. You can quickly organize notes, thoughts, ideas, jokes, stories, vacation planning, study, recipes, information, images... literally whatever! Easily get your thoughts written down, link to videos or websites and add images. cloudBRAT can also be a website where you present that information to just friends or the entire world if you like (depending on your permission settings for each Cloud).
Technical: The "Front End" and "User Management" is handled by Backdrop. The cloudBRAT APP (information manager) is a custom coded APP which works together with Backdrop.
I love Backdrop's speed, simplicity, backdrop custom coding simplicity, user management, etc. I try to use Backdrop whenever I can.