Readwise - Effortlessly rediscover and organize your Kindle highlights
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Clippings.io - Organize the notes you make on your Kindle
Punkt - Private & secure one-sentence journaling
Klib - Kindle & iBooks Highlights Manager
Journalistic - A simple, yet powerful micro journaling app