"2. Yelp for business services"<p>Take it three steps further. I want to know what tools of all types other developers are using. I'm a game developer want to browse what other studios are actually using and sort based on developer size, time, and more.<p>For example what do people use for Source Control? Small devs probably use Git or SVN. Show a time trend and SVN likely trends down and Git way way up. Large devs will almost exclusively use Perforce. I want to see this data for EVERYTHING. Text editors, modeling packing, memory managers, build tools, databases, profilers, and so so much more. There are dozens of amazing, wonderful tools/middleware/things out there that I don't even know exist.<p>This can naturally be expanded outside of software development, but I'm greedy and want to use it for myself first and foremost. :)