Amethyst  

 do they have a web version?  

 Android only unless you know something we don't.  

 I've been enjoying ditto.pub
Buggy at times but I like the clean look. 
Nostrudel is great too, reminds me of the spirit of Amethyst (if it can be done, it will be done), but on the web.  

 I find myself using Coracle and Ditto the most. Both have features I find very helpful. 

https://coracle.social
https://ditto.pub