The best Linux Distro alternative to Microsoft Active Directory is Zentyal. It's not free, so if you're looking for a free alternative, you could try Univention Corporate Server (UCS) or UCS@school. If that doesn't suit you, our users have ranked more than 10 alternatives to Microsoft Active Directory and four of them are Linux Distros so hopefully you can find a suitable replacement.
Integrates native Active Directory and all essential network services, including domain, mail, gateway, infrastructure, and security roles, for SMBs, offering web-based management, centralized authentication, file server, VPN, and firewall in a single Linux platform.
It's free and easy to use.
UCS is an open platform for central identity & access management, IT management, and active directory, with a web portal for easy access to applications.
it works flawless and it's free as long you don't need commercial support. Companies can get professional support from UCS or UCS Partners. It is the most complete alternative to MS ADS.
SambaBox is an enterprise directory appliance with Web based management interface. SambaBox also offers integrated domain name (DNS), dynamic computer configuration (DHCP), certificate authority (CA), Microsoft Exchange compatible and also supports up to 2016 Functional Level...
I like SambaBox as an alternative to Microsoft AD for its robust GPO management and sleek web interface. It excels with secure, extensive API integrations and efficient bulk operations, making it effective for handling large user data and policies.
I tried with demo license. It was worked with my windows and mac enviroment.
SambaBOX offers more tools than standart Microsoft Active Directory like CA, DHCP, SNMP. Best part is installation takes just minutes.
A specialized extension of UCS for the education sector, providing centralized identity & access management, device & user management, and integration of school and cloud services via a web portal.
Spain
EU
Germany
Türkiye
100% drop-in replacement, tried and tested by yours truely.