How do you find people with certain expertise within your company?

Question

When you need to find who's responsible for something in a different department, or you need to find who has worked on a particular project, what do you do?In other words, do you have a tool to find who knows what in your organization? Or do you just have to ask around a lot till you find someone who knows how to find someone?

lettergram · Accepted Answer

Funny you should ask that's my entire business:
https://insideropinion.com/
It's actually a problem in pretty much all medium to large companies! There wasn't a good solution outside of internal conferences or some centralized sharing solution... so I built a solution!
Feel free to email me if you're interested.