Navidrome, as a music server. It’s very convenient to have a central place to host your music.

My biggest issue is that it doesnt’t support multiple artists yet.

Marp might also work. I believe it’s a bit more limited but it is simpler. I think it may also pe based on Revealjs

Jolly Image Format

Might start an argument but:
GIF -> GHIF

Yep, StreetComplete is one of the many editors for OpenStreetMap! Just to name a few:

Mobile (Android & iOS Mixed):

• Vespucci.
• EveryDoor
• Go Map!!

Desktop:

• iD (the online editor on the website)
• RapiD
• JOSM
• Level0

And many more! There’s a list on the OpenStreetMap wiki.

It actually bundles answers to a certain quest together if I remember correctly. For example, all road surface quests within a certain time (about an hour?) are grouped into one change set. Though if you did one road surface quests and one opening hours quests they would uploaded as two separate change sets.

You could use the editor on the website which although messy, would work fine for removing a road on mobile. Or you can use an app like Vespucci which is more advanced, but it also has a bit more of a learning curve. Or you can create a note like others have recommended but depending on the activity in the area might not be seen for a while.