Eventtus - Engagement platform for events.
Shapr - A completely free way to build your professional network.
ColdInbox - Quickly Send Automated LinkedIn Messages That Convert Your High Value-Prospects Into Leads And Then Customers Without Having to Spend $$$ in Advertising!
GetReal - Meet new people, in person
Event Hunt - Startups and Tech Events Curated By Locals
Meetup for iOS and Android - Discover groups that are all about the things you love