Hiyo - Get advice, opinion or discussions from strangers.
Lunchclub - Curated 1:1 professional connections
Startups Anonymous - Anonymously ask questions and share stories. AA for Startups
ChitterChat - Speak to 1 new person every week
YouHue - A fun new way to ask "How are you?"
Lunch Roulette - Collaboration by grouping coworkers randomly for lunch.