uLouder - Modern Craigslist and Nextdoor for urban nomads
Partle - Revolutionizing the way people get together
Explore nearby places for Airbnb - Discover must-see places when browsing Airbnb (Chrome ext)
Discotech - Opentable for nightlife. Tickets, guest lists, and VIP.
Whereabouts - Write posts and chat (group or 1-on-1) with people nearby!
DoNotPay Travel - Get paid when the price drops on flights & hotels. 100% Free