Best Open Source Operating Systems 2026

Operating Systems

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Browse free open source Operating Systems and projects below. Use the toggles on the left to filter open source Operating Systems by OS, license, language, programming language, and project status.

Total Network Visibility for Network Engineers and IT Managers
Network monitoring and troubleshooting is hard. TotalView makes it easy.

This means every device on your network, and every interface on every device is automatically analyzed for performance, errors, QoS, and configuration.

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Awardco Employee Recognition
For companies looking to recognize and reward their employees

Everything you love about Amazon is now available for rewards and recognition. Awardco has partnered with Amazon Business to bring millions of reward choices, lower vendor fees and dollar-for-dollar recognition spend to your organization. More choice, more capability, and less spend - all in one simple platform.

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1

Robolinux

Announcing Robolinux Cinnamon 14.1

Announcing The New Robolinux Series 14 Mate LTS - 2034 Robolinux is very pleased to announce a completely new 14.1 Mate privacy centered 1inux operating system you can download freely while also offering our users an optional 14+ advanced upgrade which comes with our Untracker and FAAST Boot along with one click popular privacy software installers like Tor and I2p, Wireshark and Bleachbit plus many more for a fair and reasonable price. Robolinux14.1-Mate is ideal for beginners and advanced users. We are proud that it comes with Enoch AI which is TOTALLY 100% PRIVATE, FREE, HONEST & UNCENSORED built into Robolinux Cinnamon 14.1 The Robolinux 14.1 version with rock solid Long Term Support through 2034! requires users to set secure boot in their BIOS. It is currently available in the Cinnamon desktop flavor. we will release series 14 Xfce version in the next two months.For more information please see Readme file. Warmest regards John Martinson Robolinux.org

6 Reviews

Downloads: 111 This Week

Last Update: 2025-10-04
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2

IPCop Firewall

Linux firewall distribution geared towards home and SOHO users.

The IPCop Firewall is a Linux firewall distribution. It is geared towards home and SOHO users. The IPCop web-interface is very user-friendly and makes usage easy.

66 Reviews

Downloads: 59 This Week

Last Update: 2018-09-04
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3

GTCop

GTCop Professional Security Appliance aims to provide a powerful tool for satellite communications, with enhanced QoS and bandwidth controls. As derived from IPCop Firewall, it is a stable, secure, easy to configure and maintain GNU/Linux firewall box.

Downloads: 0 This Week

Last Update: 2013-03-26
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4

SME Server

The Koozali SME Server is a simple and robust server gateway for SOHO

The Koozali SME Server is the open source community side of the original e-smith server. SME Server consists of a modified Red Hat / CentOS Linux installation, together with a number of server applications as well as the server management web panel. Its strengths are its ease to use for anyone able to use a web interface, and its robustness, giving the ability to recover its initial state even after any upgrade. The server is designed for Small Offices and Home Offices to act as a gateway with a firewall web and email services, but fits also home user needs or even the needs as a simple and robust server only in the cloud to host your website projects and emails.

2 Reviews

Downloads: 0 This Week

Last Update: 2017-11-14
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Odoo Business Applications
Odoo is a software suite to better manage and run your company.

Odoo is a fully integrated, customizable, open-source software packed with hundreds of expertly designed business applications. Odoo’s intuitive database is able to meet a majority of business needs, such as: CRM, Sales, Project, Manufacturing, Inventory, and Accounting, just to name a few.

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