Gitlab to gitlab integration

Hi there,
we are using a self hosted gitlab CE at work. Some of our clients use accounts on or self hosted gitlab. I was wondering if there is a gitlab to gitlab integration to make gitlab projects visible in our own CE account even though they are actually hosted somewhere else. This would make live a bit easier since we would have a single login and dashboard.
Googling for this did not give any results for me so far. Any hints on this are very welcome!
Kind regards,