Literal - Track your reading and discover your next favourite book
Votum for Slack - Crowdsourced lists with upvotes, inside Slack
Readup - Track and improve your online reading habits.
Must-Read for Slack - Build controllable must-read lists for your team in Slack.
Litnerd - The Pixar for education, reading program for K-5 schools
Corpus - Curate, take notes and share your reading list