I reopen the question Open source alternatives to MS AD features (but) installable on MS Windows which was closed "as subjective and argumentative" whatever can it mean.
There wasn't a single in-topic or correct answer. Only multiple misinforming and hijacking answers and comments.
The main purpose was not to subvert MS licensing but avoid loosing time on deployment of full-fledged MS AD infrastructure when only some elements of AD and only temporarily needed for development and/or testing and/or integration.
Meanwhile I found such free non-MS and/or open-source alternatives installable on Windows, which, as I believe. is the most frequently required for development:
- http://web.mit.edu/Kerberos/dist/ (MIT Kerberos for Windows)
- http://www.userbooster.de/en/download/openldap-for-windows.aspx (OpenLDAP for Windows)
I invite you to extend this list.
This question covers exactly the same ground as earlier questions on this topic; its answers may be merged with another identical question
And both are closed without having a single in-topic answer (only misinformation and off-topic comments).
I thought it is a site governed by professionals.