Zentyal
Linux directory, domain, mail, gateway and infrastructure server for SMBs.
22 Alternatives To Zentyal
Amahi Home Server
Amahi is a media, home and app server software known for its easy-to-use user interface. Amahi has the best media, backup and web apps for small networks.
ClearOS
A very good alternative for Windows Server, for free
FreeNAS
FreeNAS is a storage operating system strong and robust enough to meet the needs of enterprise level businesses.
IPFire
IPFire is a server distribution with intended to use as a firewall.
IPFire is a hardened, versatile, state-of-the-art Open Source firewall based on Linux. Its ease of use, high performance in any scenario and extensibility make it usable for everyone.
NAS4Free
NAS4Free is the easiest and quickest way to install an Open Source free NAS server. From home NAS to enterprise network storage, NAS4Free is trusted by thousands of installations every day.
NethServer
NethServer is an operating system for Linux enthusiasts, designed for small offices and medium…
OpenMediaVault
OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux.
PetaSAN
PetaSAN is an open source Scale-Out SAN solution offering massive scalability and performance.
Samba
Samba serves as an open source alternative to the traditional domain controller offered by Microsoft.
SnapRAID
A backup program for disk arrays. It stores parity information of your data and it recovers from up to six disk failures.
Ubuntu Server
Secure, fast and economically scalable, Ubuntu helps you make the most of your infrastructure. Whether you want to deploy a cloud or a web farm, Ubuntu Server supports the most popular hardware and software.
Univention Corporate Server
Univention Corporate Server UCS with Active Directory functions and App Center is the cost-efficient and popular successor to Microsoft’s server solutions.
pfSense
pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
phpLDAPadmin
phpLDAPadmin (also known as PLA) is a web-based LDAP client.
unRAID Server
A scalable, consumer-oriented, server operating system.