Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Votum for Slack - Crowdsourced lists with upvotes, inside Slack
Linkman - Linkman Pro allows for managing large amount of URLs in its own database.
Must-Read for Slack - Build controllable must-read lists for your team in Slack.
Pocket - When you find something you want to view later, put it in Pocket.
Corpus - Curate, take notes and share your reading list