OpenTestFactory

OpenTestFactory is an Open Source test orchestration framework for automating and managing automated tests.

OpenVAS

OpenVAS is a powerful and versatile Open Source vulnerability scanner providing comprehensive security assessments for various systems and protocols.

OpenVPN

Secure tunneling VPN server

OpenVZ

OpenVZ is an Open Source container-based virtualization technology for Linux that allows multiple isolated virtual environments to run on a single physical server.

Open Web Calendar is a customizable, Open Source web calendar that embeds into websites using ICS links, ensuring privacy and broad compatibility.

Open-Xchange

Open-Xchange provides open, flexible, and scalable email platform solutions for businesses and service providers worldwide.

OpnForm

OpnForm is an Open Source, no-code platform for creating beautiful and functional online forms.

OPNsense

OPNsense is a free and Open Source firewall and router offering robust network security and easy management.

OrangeHRM is a comprehensive, Open Source Human Resource Management system.

OS.js is an Open Source JavaScript web desktop platform providing a full desktop environment within a web browser.

osTicket

osTicket is a free, Open Source help desk and support ticket system.

Osuny

Osuny is an Open Source content management system focused on creating accessible, sustainable, and secure websites.

Outline

Outline is a fast, collaborative knowledge base platform for teams to organize, share, and access information efficiently.

Overleaf

Overleaf is an open-source online real-time collaborative LaTeX editor.

OWASP ZAP

OWASP ZAP is a free and Open Source web application security scanner that helps identify and mitigate vulnerabilities.

ownCloud

ownCloud is an Open Source software for secure file synchronization, sharing, and content collaboration, enabling easy teamwork from anywhere.

ownCloud Infinite Scale is a highly scalable, cloud-native data platform providing unified access to distributed data sources.

OX App Suite

OX App Suite is a fully customizable, on-premises email platform offering a best-in-class user experience and robust features.

OX Dovecot Pro

Dovecot Pro is a high-performance, scalable, and fully supported email backend platform for large organizations.

Pacemaker

Pacemaker is an Open Source high-availability cluster resource manager that ensures continuous operation of applications and services.

Packer is a Hashicorp tool that automates the creation of identical machine and container images for multiple platforms from a single source configuration.

PacketFence

PacketFence is a free and Open Source network access control (NAC) solution that secures networks by managing and controlling access to devices and users.

pagure is a light-weight git-centered forge based on pygit2

Paheko

Paheko is an Open Source association management software providing file management, version control, ticketing, and wiki collaboration.