Top Alternatives to ClearOS

DD-WRT is a powerful, free Linux-based firmware replacement for a wide range of wireless routers. It transforms consumer-grade network hardware into a highly customizable and feature-rich platform, offering advanced control and capabilities typically found in commercial-grade equipment.

pfSense is an open-source firewall and router software distribution based on FreeBSD. It provides a powerful and flexible platform for a wide range of networking needs, from small home networks to large enterprise environments, emphasizing security, reliability, and comprehensive feature sets.

Zentyal is a comprehensive open source server solution based on Ubuntu, providing critical network services such as email, groupware, file sharing, and network infrastructure roles like directory services and gateway functions, all managed through an intuitive web interface.

OpenMediaVault (OMV) is a free, open-source Network Attached Storage (NAS) solution based on Debian Linux. It provides a web-based interface for easy management of file storage, sharing, and backup services within a home or small business network.

Cloudron is a comprehensive platform designed for individuals and businesses to easily deploy, manage, and secure web applications on their own server infrastructure. It automates critical tasks like updates, backups, and security patching, providing a self-hosted alternative to SaaS while maintaining ease of use and ensuring data privacy.

NethServer is a modular operating system optimized for small to medium businesses (SMBs) and branch offices. It offers a comprehensive suite of network services and unified threat management (UTM) capabilities, managed through an intuitive web interface. Built on CentOS, NethServer provides a stable and secure platform for essential IT infrastructure.

Amahi Home Server is a free and open-source server system based on Fedora Linux, designed to simplify home networking and digital life. It provides easy-to-use solutions for file sharing, backups, media streaming, and application management within a home environment.

Univention Corporate Server (UCS) is a comprehensive operating system and identity and infrastructure management platform. Based on Debian, it provides powerful tools for managing servers, services, applications, and users in diverse IT environments. UCS is designed for flexibility, supporting on-premises, cloud, and hybrid deployments.

Untangle offers a comprehensive network security solution combining firewall, VPN, threat prevention, and content filtering in a single, unified platform designed for small to medium businesses and distributed enterprises.

Endian Firewall Community is a powerful, open-source Unified Threat Management (UTM) solution designed to provide comprehensive network security. It integrates firewall, gateway, VPN, web security, and email security features into a single, easy-to-manage appliance.

Sophos UTM (Unified Threat Management) provides comprehensive network security by integrating a firewall, intrusion prevention, web filtering, email security, and more into a single appliance. It offers a robust and affordable solution for businesses of all sizes looking to protect their network infrastructure from modern threats.

Smoothwall is a robust, open-source firewall distribution built on a hardened GNU/Linux operating system. It provides essential network security and management features through an intuitive web interface, making it suitable for both home and small business use.

Windows Server 2012 is a powerful and versatile server operating system designed for modern businesses and data centers. It offers a wide range of features for infrastructure management, virtualization, networking, storage, and application development, providing a robust platform for on-premises, hybrid, and cloud environments.