Sesame Database Manager - Lantica Software, LLC - Sesame, A Q&A-compatible Database Manager.
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Sheep - Membership and events for SMEs and nonprofits
Event Hunt - Startups and Tech Events Curated By Locals
DbFace - DbFace is an online database application & report building tool.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets