Microsoft Active Directory is described as 'Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks and included in most Windows Server operating systems as a set of processes and services' and is an app in the Network & Admin category. There are more than 10 alternatives to Microsoft Active Directory for a variety of platforms, including Linux, Mac, Windows, Self-Hosted solutions and BSD. The best alternative is Zentyal. It's not free, so if you're looking for a free alternative, you could try Samba or Univention Corporate Server. Other great apps like Microsoft Active Directory are FreeIPA (Free, Open Source), SambaBox (Paid), Azure Active Directory (Freemium) and JumpCloud (Paid).
Zentyal is a native Microsoft Active Directory implementation on Linux incorporating all the network services required in a small and medium business environment: Directory & Domain Server, Mail Server, Gateway and Infrastructure Server.
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Zentyal vs Microsoft Active Directory opinions
Most users think Zentyal is a great alternative to Microsoft Active Directory.
Arffeh 100% drop-in replacement, tried and tested by yours truely.
Samba is the standard Windows interoperability suite of programs for Linux and Unix. Since 1992, Samba has provided secure, stable and fast file and print services for all clients using the SMB/CIFS protocol, such as all versions of DOS and Windows, OS/2, Linux and many others.
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Samba vs Microsoft Active Directory opinions
Almost everyone thinks Samba is a great alternative to Microsoft Active Directory.
It's literally a reimplementation of AD on Linux. Samba has been around for many years and is trusted by thousands of admins to provide seamless Windows interoperability.
FreeIPA is an integrated security information management solution combining Linux (Fedora), 389 Directory Server, MIT Kerberos, NTP, DNS, Dogtag (Certificate System). It consists of a web interface and command-line administration tools.
FreeIPA vs Microsoft Active Directory opinions
Almost everyone thinks FreeIPA is a great alternative to Microsoft Active Directory.
not only completely free its the only one i implimented and joined linux hosts to it. all the rest failed to deliver.
SambaBox is an integrated enterprise domain appliance which works flawlessly with Windows AD environment. SambaBox offers, Integrated DNS, DHCP, CA and SaltStack with web based management on hight secure environment.
SambaBox vs Microsoft Active Directory opinions
pros, cons and recent comments
SambaBOX offers more tools than standart Microsoft Active Directory like CA, DHCP, SNMP. Best part is installation takes just minutes.
Cloud-based directory services. Alternative to Microsoft Active Directory. Provides LDAP-as-a-Service, RADIUS-as-a-Service. Authenticates, authorizes, and manages employees, their devices and IT applications.
OpenLDAP Software is an open source implementation of the Lightweight Directory Access Protocol. The suite includes: slapd - stand-alone LDAP daemon (server) libraries implementing the LDAP protocol, and utilities, tools, and sample clients.
Enterprise-class open source Linux LDAP server. Hardened by real-world use, full-featured, supports multi-master replication. 389 DS can be downloaded for free and set up in less than an hour using the graphical console.
Go-lang LDAP Authentication (GLAuth) is a secure, easy-to-use, LDAP server w/ configurable backends. - Centrally manage accounts across your infrastructure - Centrally manage SSH keys, Linux accounts, and passwords for cloud servers.