There are 2-3, I've tried them all and none are really usable. None have had an update in the last year or more, some crash on launch, some are lacking the most

There are 2-3, I've tried them all and none are really usable. None have had an update in the last year or more, some crash on launch, some are lacking the most basic usability features (double space for inserting a ".", readable fonts, correct layouts, etc).