Windows Server Essentials

Windows Server Essentials (formerly Windows Small Business Server) is a flexible, affordable, and…

19 Alternatives To Windows Server Essentials

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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.
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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.
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MDaemon Messaging Server

Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for…

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.

Sophos UTM

Sophos UTM integrates complete security software within a single appliance.

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.
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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.
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Windows Server 2019

Increase security, evolve your datacenter, and innovate faster with Microsoft Windows Server, the cloud-ready operating system.

Zentyal

Linux directory, domain, mail, gateway and infrastructure server for SMBs.

pfSense

pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more

unRAID Server

A scalable, consumer-oriented, server operating system.