Is there a website where are links to all/most of different implementations and applications of #nostr protocol?

Is there an app/widget which shows me "sats per dollar" or "sats per eur" on my android phone screen all the time?

Is there a service for batching together #bitcoin transactions from many different users. Kind of like a pool for batching, to reduce the fees for individuals? Like we have coinjoin pools but for batching transactiosn with different sizes. Does it even make sense?

Funny how #bitcoin is running and all this pile of crap is trying to figure out what it's next move will be.