Security tool for monitoring HTTPS traffic?

I have a similar question too!

Are they products they can look inside HTTPS traffic? Some customers doesn't
trust HTTPS traffic going inside the company over the proxy! For example, I
have heard that a combination of squid and apache configuraion can do these,
but I have never seen it.

Every information will help me!

Mit freundlichen Gruessen/ Best Regards/ Avec meilleures salutations

A. Fredrich