There are quite a few. In order of preference, I used/tried:

• XMPP (Android-Conversations; Windows-Gajim)
• Element/Matrix
• Session
• Discord
• Slack
• Twinme
• Teams
• Skype
• Facebook Messenger
• Instagram DMs

I was using landrop before. Works fine but the GUI was just a bit off, not intuitive enough. That’s Localsend’s biggest improvement IMO.

Falling Lightblocks, available on his own website or GitHub.

TheOnion worthy title.

In hindsight, that’s what I’d go for. You could have audiobookshelf, tachiyomi or any of your favorite android reading apps. But the Kindle does what it does well, and for relatively cheap. Maybe in 5 years I’ll reconsider, if my kindle ever dies!

Tried both and settled with AntennaPod when there were rumours of Google Podcasts shutting down a few months ago.

I now value more export/import features. I also enjoyed AntennaPod’s queue options more.