Trello isn't working for me. Basecamp doesn't allow for dependencies.
|This picture from Android Insurrection amuses me greatly. That's David Ian Lee and Jeff Wills.|
Wix has a free space in Union Square. A free open-space office?
Greenpoint Coworking is $350/month.
Work At The Yard has private offices for $400/month
Missionfifty is in Hoboken. So except for the fact that not one of my editors will ever come there, it seems cool (they also have about zero information on their own website so I was looking here.)
Submerse.me has space in midtown.
Projective Space is worth visiting. They're in Soho.
Imrey Culbert also rents space.