There are several great threads going on right now on DIYcity, and they're so spread out across the site that I wanted to collect them all in one place, for anyone who wants to follow them and/or jump in with discussion, planning or development.
First, there is an ongoing New York City Zoning Data discussion. An API has been built for a zoning app, and people involved are talking about next steps for creating an actual app around that API.
Then, there's some really interesting talk around improving Andy Weissman's TrafficTweet. The idea is really coming together, and the latest idea seems like something that would really be worth trying out in a city.
There is an ongoing discussion on what would make the best Ridesharing App, that includes some good criticism of the existing apps out there. The latest post is really right on, and I think something good is going to come out of this.
Lastly, there's an interesting idea being floated for a networked, distributed delivery system, which the author is calling Open Source Post Office. Seems promising.
There are several other ideas brewing too, which will hopefully boil up something good.
It's great to see some of these ideas moving toward becoming actual working apps. Anyone who has ideas, energy or resources to help move them to the next stage shouldn't hesitate to jump in and help make that happen.