Lightweight Secure OS for Accessing VDI, DaaS, and Web Apps
ThinClient Direct provides secure, enterprise-ready thin client software for modern VDI, DaaS, and cloud workspace environments.
As part of our endpoint stack, we offer Rangee OS, a purpose-built thin client operating system developed in Germany with over 25 years of experience in Linux-based endpoint computing. It is designed for secure access, centralized management, and consistent performance across distributed environments.
The result is a streamlined endpoint layer that removes the complexity of traditional desktop operating systems while giving IT teams greater control, security, and scalability.
TCD Secure OS is a secure endpoint OS purpose-built for virtual desktop and cloud workspace deployments. Designed on a streamlined Linux foundation, this secure Linux OS reduces local complexity, centralizes endpoint governance, and enables structured control across distributed VDI environments.
For organizations standardizing their endpoint architecture, TCD Secure OS provides a secure, hardware-independent operating system optimized for controlled virtual desktop access, and when paired with TCD thin client hardware, delivers a tightly aligned, purpose-built endpoint stack.
Secure Architecture for VDI and Cloud Workspaces

The Rangee Operating System is a secure Linux OS built for VDI and cloud workspace environments, helping organizations simplify endpoint infrastructure, strengthen secure desktop access, and support centralized workspace delivery across distributed workforce environments. Designed for platforms such as Citrix, Omnissa, Azure Virtual Desktop, and Windows 365, the operating system minimizes unnecessary local processes, reduces local data exposure, and delivers stable, predictable performance for virtual desktop deployments. Its lightweight architecture supports modern Zero Trust strategies while helping IT teams maintain a more consistent and controlled endpoint environment.


Centralized Governance and Operational Control
Rangee thin client OS integrates directly with the Thin Client Management System (TCMS) to provide centralized governance, operational visibility, and scalable endpoint administration through a unified management interface. IT teams can deploy group-based configurations, apply centralized updates, manage device profiles, standardize policies, and onboard new devices without time-consuming device-by-device management. Its modular architecture also enables controlled software customization while preserving system stability, operational consistency, and long-term infrastructure control across enterprise VDI and cloud workspace deployments. This centralized approach helps reduce administrative overhead while supporting standardized endpoint operations at scale.

Hardware Flexibility and Deployment Strategy

The Thin Client Operating System is designed to support flexible deployment strategies while enabling desktop repurposing for organizations seeking to extend the lifecycle of existing hardware. By replacing traditional operating systems with a lightweight, secure endpoint OS, businesses can transform compatible legacy PCs and laptops into centrally managed thin client endpoints optimized for virtual desktop and cloud workspace environments. This approach allows organizations to modernize endpoint security and management without requiring full hardware replacement cycles. The operating system also integrates seamlessly with TCD thin client hardware and supported third-party devices, helping reduce hardware dependency, lower endpoint resource consumption, and support long-term infrastructure planning with greater operational flexibility.
Who Rangee OS is Designed For

Rangee OS is suited for organizations that require:
It is appropriate for enterprises, distributed organizations, managed service providers, and IT teams standardizing secure thin client environments.


Frequently Asked Questions
See Rangee OS in Action
Schedule a guided demo to explore how Rangee OS supports centralized management, hardware flexibility, secure access, and a long-term endpoint strategy across your existing devices and thin client hardware.
Share a few details, and we’ll help map the best fit for your environment.

