Votum for Slack - Crowdsourced lists with upvotes, inside Slack
TradingView - The best charting tool for crypto and stocks
Must-Read for Slack - Build controllable must-read lists for your team in Slack.
eToro - The social investment network that connects traders from around the globe and enables them to share...
Corpus - Curate, take notes and share your reading list
Robinhood - Free stock trading service.