SaaS 1000 - Free exportable list of the fastest growing SaaS companies
Readwise - Effortlessly rediscover and organize your Kindle highlights
Inside SaaS Sales - 1000+ sales emails and voicemails from top SaaS companies
Clippings.io - Organize the notes you make on your Kindle
pickSaaS - Hundreds of SaaS products, analyzed.
Klib - Kindle & iBooks Highlights Manager