At GreenCore, we provide reliable, secure, and sustainable managed services built upon proven open source platforms. Our approach ensures organisations, institutions, and enterprises benefit from long-term stability, reduced costs, and full transparency, while avoiding unnecessary dependence on proprietary vendors.

We design, deploy, and maintain critical IT systems using Debian GNU/Linux, Rocky Linux (RHEL), OpenBSD, FreeBSD, OmniOS, and Proxmox Virtual Environment (PVE) — operating systems and hypervisors renowned for their robustness, security, and efficiency. By focusing on these platforms, we deliver environments that are not only highly performant but also aligned with open standards and sustainability goals.

What we can provide

• Systems Administration & Monitoring
Continuous monitoring, patch management, and proactive administration of servers, storage, and networks to ensure uptime and resilience.
• Virtualisation & Infrastructure Management
Deploying and maintaining Proxmox VE clusters for virtual machines and containers, enabling scalable, flexible, and resource-efficient infrastructure.
• Secure Networking & Firewalls
Hardening and maintaining systems with OpenBSD and FreeBSD, delivering advanced firewalling, routing, and VPN solutions.
• Storage & Data Services
Leveraging ZFS on FreeBSD and OmniOS to provide enterprise-grade data integrity, backup, and replication strategies while deploying and managing PostgreSQL, a robust enterprise-grade database trusted globally for its reliability, scalability, and standards compliance.
• Lifecycle Management
Ensuring long-term maintainability by standardising on open source platforms with stable release cycles, minimal overhead, and strong security track records.
• Sustainability by Design
Extending the useful life of existing hardware and reducing environmental impact by deploying lightweight, efficient operating systems instead of mandating costly upgrades.

Why GreenCore?

• Open Source Expertise
Deep specialisation with 25 years of experience in Unix-like systems that are trusted worldwide for mission-critical workloads.
• Security First
Platforms like OpenBSD and FreeBSD offer industry-leading hardening, while Proxmox (built on Debian GNU/Linux) deliver stable and secure enterprise deployments.
• Sustainable Approach
Prolonging hardware life cycles, lowering energy consumption, and supporting communities through open technology.
• Tailored Support
Managed services scaled to your needs, whether a single server, a complex cluster, or hybrid infrastructure.

By entrusting GreenCore with your IT operations, you gain a partner committed to stability, security, and sustainability - ensuring your infrastructure remains future-ready without compromise.