BackBox Linux An Ubuntu-based distribution designed for penetration testing, security research, and digital forensics workflows.
Baruwa An open source messaging security gateway built to filter spam, malware, and email-borne threats.
Batocera Linux A plug-and-play retro gaming distribution that turns a PC into a polished console-style emulation system.
Bedrock Linux A meta-distribution that lets advanced users mix packages and features from multiple Linux distributions together.
Berry Linux A Fedora-based live distribution aimed at desktop users who want multimedia support and easy hardware detection.
BiCom Systems A communications-focused Linux offering tied to business telephony and contact-center deployments.
BlackArch Linux An Arch Linux-based penetration testing distribution with a very large collection of security tools.
BlendOS Linux An Arch-based universal operating system designed to run apps from multiple Linux ecosystems on one desktop.
BlueOnyx A server-focused Linux platform with a web-based control panel for hosting and appliance management.
BlueStar Linux A feature-rich Arch-based distribution that ships a highly customized desktop out of the box.
Bodhi Linux A lightweight Ubuntu-based distribution centered around the Moksha desktop and older hardware efficiency.
Br OS Linux A Brazilian desktop Linux distribution focused on approachable installation, Debian stability, and KDE usability.
BSD Router Project A router and network appliance platform built for compact, embedded, and infrastructure-oriented deployments.
BunsenLabs Linux A lightweight Debian-based distribution and community successor to CrunchBang, centered on Openbox and customization.