Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
SlackPass - Subscription access to anything with Slack
Geneva - An all-in-one communication app for groups & communities
InviteRobot - Instant subscription for paid Slack communities
Community Fund - An early-stage accelerator to help communities grow from 0-1
Quorum - Quorum provides tools to create outreach efficient, effective and people-centered field actions.