Lunchclub - Curated 1:1 professional connections
Serendipity - Serendipity is a PHP-powered weblog engine which gives the user an easy way to maintain a blog.
Run the World - A platform that enables live, online events
Lunch Roulette - Collaboration by grouping coworkers randomly for lunch.
Beam.gg - An event platform where people can find esports events
Founders Cafe - Co-work with Founders from Stanford, YC, Harvard