Answer Guy on Nostr: Speak for yourself. Here's a list of options, most of which are not for iPhone/iPad ...

Speak for yourself.

Here's a list of options, most of which are not for iPhone/iPad nor Android:

https://github.com/aljazceru/awesome-nostr

Many of the more interesting applications for NOSTR may be for machine-machine event handling (similar to the sorts of things we used to do with procmail handling e-mail over SMTP).