ClearOS
A very good alternative for Windows Server, for free
ClearOS Alternatives
The best ClearOS alternatives based on verified products, community votes, reviews and other factors.
Latest update:
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pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
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Linux directory, domain, mail, gateway and infrastructure server for SMBs.
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Ensure healthy website performance, uptime, and free from vulnerabilities. Automatic checks for SSL Certificates, domains and monitor issues with your websites all from one console and get instant notifications on any issues.
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NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
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OPNsense® you next open source firewall. Free Download. High-end Security Made Easy™. Offers Intrusion Prevention, Captive Portal, Traffic Shaping and more.
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OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux.
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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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The main product of MikroTik is a Linux-based operating system known as MikroTik RouterOS.
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Untangle is a platform for deploying network based applications.
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Endian Firewall Community (EFW) is a "turn-key" linux security distribution that turns...
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IPFire is a server distribution with intended to use as a firewall.
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OpenWrt is an open-source firmware based on Linux for wireless routers
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FreeIPA is an integrated security information management solution combining Linux (Fedora), 389...
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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.