- NewPipe -> for audio online there is AudioTube and for video there is Plasmatube - Podcast -> Alligator (an RSS reader) is gaining support for podcast soon (there is an open MR) - AndOTP -> Keysmith, but it still missing some features like scaning a Qr code - Signal (and/or Matrix): I develop a matrix client called NeoChat - Maps: there is PureMaps powered by OSM - Orgzly: still missing - Email: there are some poc that are able to read mails but this will still require a lot of time - Good browser support: Angelfish is great

You can find a bigger list of apps in https://www.plasma-mobile.org/. There is a few still missing that I will try to add later.