FreeBSD is an operating system for a variety of platforms which focuses on features, speed, and stability. Developed by The FreeBSD Project
License: Open Source
Ubuntu Server brings economic and technical scalability to your datacentre, public or private. Whether you want to deploy an OpenStack cloud, a Hadoop cluster or a 50,000-node render farm, Ubuntu Server delivers the best value scale-out performance available. Developed by Canonical Ltd
License: Open Source
FreeBSD is known for its advanced networking and security features, making it suitable for high-performance applications, while Ubuntu Server is favored for its ease of use and extensive community support, making it ideal for quick deployments and broader software compatibility.