How can I intercept (not just monitor) HTTPS requests/responses so that I can edit the contents before they're sent/received?

Question

I want to intercept responses from HTTPS requests sent by any client application on my system. I don't want to simply monitor, but intercept so that I can modify the response before it is received by the client. This would allow me to monitor all outgoing requests for a specific resource URL, handle the response, and modify it before sending it off to the client application which would be blissfully unaware. If I am debugging and have a breakpoint set, the application would simply wait for the response as if it's waiting for the server to respond.

I am using the outdated Windows 7 which doesn't natively support some .NET features (web sockets, for example), so I am hoping there is a compatible solution for my OS.

Edit: I've tried HttpEventListener, but it only appears to work with localhost based on my reading (I haven't been able to get it to work with an external URL).