Within the past couple months, I saw someone’s pet-project where they were cobbling together a self-hostable FOSS app/service to allow people to collaborate on travel planning. It included note taking, images, possibly some functionality around dates, and a map to drop pins and see a route (I’m not sure which backend but I would guess OSM).

Now I can’t find it. :(

Does anyone use an app like this? Does anyone have any recommendations? My needs are loose - my only requirements are a FOSS license and to be self-hostable.

Thanks for ideas/suggestions.