Readwise - Effortlessly rediscover and organize your Kindle highlights
Klib - Kindle & iBooks Highlights Manager
Walmart eBooks - Over 6 million titles to bring with you anywhere
Clippings.io - Organize the notes you make on your Kindle
The New iPad Air - Apple's refreshed iPad Air, thinner and with pencil support
Newsletters to Kindle - Read your newsletters on your Kindle