Kindle2Notion - Export your Kindle clippings to a Notion database
Bookstash - Bookstash is a free library of curated summaries from top nonfiction books.
Hazel - Lighweight update server for Electron apps
Book Video Club - Quick video summaries of the top business books for startups
Readwise - Effortlessly rediscover and organize your Kindle highlights
Instaread - Read or hear key takeaways of any book in minutes