Shapr - A completely free way to build your professional network.
Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
LetsLunch - Do more with your lunch hour. Meet new people.
Geneva - An all-in-one communication app for groups & communities
Wildcard - Discover, connect and meet people at communities
Community Fund - An early-stage accelerator to help communities grow from 0-1