It could be useful for us with home labs for the same reasons. Kind of annoying to deploy docker containers for all the services I build that amount to personalized/skinned trello boards.

Not trying to plug myself, but I’ve been working on a similar project for this exact reason. It doesn’t use special file types. Just HTML and localStorage proxies to sync devices.

It’s self-hostable too. I’ve got a bunch of super niche todo lists and personal apps running on my home server with it.

https://github.com/momja/Exhibit