Citycal – Collaborative Events Calendar
Event aggregation is solved by Facebook Events, Meetup, and Resident Advisor.

Local event aggregator for SF when Eventbrite, Meetup, Ticketmaster already exist.
San Francisco residents seeking local entertainment, event organizers
Eventbrite · Meetup · Ticketmaster
1) Some buddies and I went to a trivia night late last year, only to arrive to find it cancelled (with signs still on the walls saying it happened every Tuesday, etc)
2) Sourcing ideas for fun things to do in the city on a given night, in a given neighborhood. Some sites help a ton (e.g. funcheapsf), but often don't have everything I'd want to see, so we decided to build that out a bit.
Anyway, I built this originally to solve #1, then a buddy and I expanded it to also start addressing #2 (still in progress, but we've added more event types already). Thanks for checking it out! We're very open to thoughts / feedback.
Event aggregation is solved by Facebook Events, Meetup, and Resident Advisor.
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