Votum for Slack - Crowdsourced lists with upvotes, inside Slack
Choosy - Choosy opens links in different browsers as specified, according to rules, set by the user.
Short - The reading list for busy people
Finicky - A MacOS app for creating rules that decide which browser is opened for every link that would open...
Corpus - Curate, take notes and share your reading list
Account Surfer - Quickly switch between accounts and browsers on Windows