Slackin - Create your own public Slack chat community
Listr - Listr lets you explore some of the best lists on Twitter, curated across your favorite categories.
Mio - Powering seamless communication between workplace chat apps.
Refined Twitter - A browser extension that improves the Twitter experience
Chats.Directory - A curated list of the best Slack groups for professionals
Vicariously.io - Create Twitter lists based on the follows of other users