Does opensoure have a corporate telephone directory?

Question

open source

Good afternoon colleagues.
Interested in corporate telephone directory offline/online.
Essence:
1. Integration with AD
2. Ability to add users not in AD
Interested in both web and desktop (client / server, etc.) variations
Tell me)

Answer 1

Look towards the Zentyal solution .
What interests you is here .

Answer 2

You can try this one .
We fill in the fields with our data and everything is pulled from AD.
... if not only from AD, then you need your own database...