Slack App Directory - Your go-to for finding apps that work with Slack
InviteRobot - Instant subscription for paid Slack communities
Clerk Chat - SMS for Slack
SlackPass - Subscription access to anything with Slack
Cato - Instant Spotlight-like search for your web browser.
Magik for Slack - Magik enables founders, marketers & community builders to create the community experience they never knew was possible.