Unsure what a Linux distribution is? Read the Linux Distribution Guide
Ampro Embedded Linux
Ampro Embedded Linux is a free, open-source, reduced-footprint operating system enhanced with device-oriented features such as its default touch-enabled Hildon graphical user interface, plus other selected technologies from the Ubuntu Mobile & Embedded (UME) project.
BlueCat Linux from Lynx
Lynx announced an embedded Linux solution today. With over a decade in providing embedded real-time solutions, Lynx is a real contender in providing a stable, well-tested (ISO9001) and well supported embedded Linux offering. BlueCat Linux is based on the RedHat 6.1 and is a complete open development environment that allows both native and cross development. Check it out at www.lynx.com or at www.bluecat.com.
CacheGuard OS is a Linux based operating system dedicated to Web traffic control and optimization. It transforms an x86 based machine to a powerful, affordable Web gateway appliance. It allows you to control all Web traffic that passes through a CacheGuard appliance. It proxies HTTP, HTTPS, and FTP. It supports HTTP transparent implementation, HTTP compression methods, caching technologies, and user-defined black and white lists. It features a fireWall with NAT and PAT, bandwidth management (QoS), Web-based and SSH-based administration interfaces, and high availability.
Darma NAS OS
features an SSL encrypted client-server, Java Graphical User Interface, small footprint under 64MB and RAID 0, 1, 5, 5 + hotspare
DIskless Embedded Technology Personal Computer: Do-It-Yourself open source thin client software kitset, allowing IT professionals to construct generic- or special-purpose thin clients using commodity x86 PC hardware.
DIET-PC is based on an embedded Linux O/S running entirely in RAM, loaded over the network via TFTP. The O/S is fully self-contained and - except for the basic service protocol - communicates with its environment only by means of industry standard IP protocols, such that the Linux nature of the O/S is largely hidden from and irrelevant to the user
ELinOS is an integrated development environment, that provides a seamless development toolchain from driver to application development. ELinOS offers all tools like compiler, linker and debugger, supports adequate boot strategies, is available for established embedded hardware and is handled easily by its graphical tools.
a complete desktop solution which offers the Thin Client user a fast, comfortable and secure access to Windows and other applications residing on servers. Neither the end-user nor the administrator need Linux knowledge. The user interface is simple and easy to use.
supported processors has expanded to include Pentium III, Pentium IV, VIA, NSC Geode (in work) and Transmeta (in work)
Embedded Coyote Linux
Embedded Coyote Linux is a Firewall and VPN server that is based on the Embedded Coyote Linux core.
Embedded Debian Project
the goal of the Embedded Debian Project is to make Debian GNU/Linux a natural
choice for embedded Linux. Debian's open development process,
reputation for reliability and security,
powerful package manager, and wide and growing range of supported architectures
provide a solid technical foundation for the realization of this goal
emKnoppix is a distribution of Knoppix tailored for use in embedded systems.
a concept that uses a real-time variation of the open source Linux Operating System for onboard spacecraft use
FreeWRT is a meta GNU/Linux distribution for embedded systems. In this context, "meta" means you can build the complete distribution from source. FreeWRT is meant to be an appliance development kit (ADK) especially designed for embedded system developers and advanced users.
iMedia embedded linux
Media Embedded Linux Distribution is a hybrid between a small embedded linux distribution and full featured linux distribution. While not having the restrictions of an embedded linux distro (like small range of hardware / architectures, non standard libraries, filesystems) it's much more lighter in disk space and cpu/memory usage than a full featured linux distribution.
KaufKauf Slim Linux
KaufKauf Slim Linux is a fully configured Linux-based operating system that is able to run from flash memory. It doesn't require more than 500 MBytes of disk-space. It comes with full support for TouchKit touch controllers and is made to run on weak systems (200 MHz CPU and 128 MBytes RAM are enough). It is designed for embedded systems, doesn't need to be shut down cleanly and comes with GNOME, CUPS, and several other features.
Linux Embedded Appliance Firewall: an easy to use embedded Linux network appliance for use in small office, home office, and home automation environments. Although it can be used in other ways, it's primarily used as a gateway/router/firewall for Internet leaf sites
libreCMC is an embedded GNU/Linux-libre distro with out non-free software or binary blobs. The project's goal is to provide an embedded distro that respects user freedoms and allows users to control what their hardware does.
Linu is an Embedded Linux for PDA and Internet Appliance. Especially, it's compact size and efficiency is applicable to Smart Phone and PDA.
designed specifically for users of Palm and Palm-compatible PDAs
aimed at creating a complete, embedded firewall software package that, when used together with an embedded PC, provides all the important features of commercial firewall boxes (including ease of use) at a fraction of the price (free software)
MediaBoxOS Embedded Linux
a small embedded Linux distribution designed for Compact Flash operation. The MediaBoxOS is MediaBoxOS Embedded Linux is a simple Linux distribution has been battle hardened for more than 2 years running as a specialized media operating system, where response time and stability are very important factors.
MontaVista Linux Professional Edition
(commercial) providing a standard development platform for designs, it enables developers to create a broad range of embedded applications, from solutions for consumer devices to highly available telecommunications and data communications equipment
Pocket Linux Workstation: an Open Source, custom Linux embedded platform small enough for your pocket and powerful enough for your workstation
an embedded Linux distribution designed specifically for B2B information appliances. Based on Official Red Hat Linux, NeoLinux is smaller, more secure and includes Neoware's ezSecure, ezOff and ezManage technologies
Nuttx is a real-time embedded operating system (RTOS). It has a small footprint that is usable in micro-controller environments. It is fully scalable from tiny (8-bit) to moderate embedded (32-bit) systems. It also aims to be fully compliant to standards, to be fully real time, and to be totally open.
Open Embedded Linux Entertainment Center, or OpenELEC for short, is a small Linux distribution built from scratch as a platform to turn your computer into a complete XBMC media center, the open source entertainment media hub. OpenELEC is designed to run from flash media, like a USB key, Compact Flash card or SD card. Read more
Osnofianlinux is a project that creates small, special-purpose Linux distributions, which can be written to a floppy disk, CD boot sector, USB stick or even to a hard drive.
PeeWeeLinux is a small Linux Distribution for Embedded applications. PeeWeeLinux is an attempt to make the configuration and installation of a Linux operating system on an embedded platform as painless as possible.
Pico/Linux is a Linux distrobution based on PicoGUI, providing a complete Open Source operating system for handheld computers like the VTech Helio.
commercial-ready operating environment for smart flat-panel devices. Century Embedded Technologies’ PIXIL operating environment is an embedded Linux software solution designed specifically for today’s emerging market of smart flat-panel devices, such as PDAs
Poky is an open source platform build tool. It is a complete software development environment for the creation of Linux devices. It enables you to design, develop, build, debug, and test a complete, modern, software stack using Linux, the X Window System and GNOME Mobile based application frameworks for both ARM and x86 based platforms.
a standardized embedded debug and bootstrap solution that provides firmware for running and debugging eCos, GNUPro applications, and embedded Linux systems on a wide range of embedded platforms including ARM, MIPS, MN10300, PowerPC, Hitachi SHx, v850, and x86
the Linux or BSD based solution for Industrial Automation, Communications, Instrumentation, and Control. Providing controlled and dependable hard Realtime processing and convenient interaction with general purpose OS and its applications
a general toolset that is designed to be used on minimal Intel and compatible PC based hardware for next generation embedded and dedicated applications
a Chinese embedded distro
Ubuntu MID Edition
Ubuntu MID Edition targets a class of computers called Mobile Internet Devices. It offers full Web 2.0/AJAX fidelity, with custom options of Adobe Flash, Java, and more. Ubuntu MID Edition is highly flexible and customizable. It is an ideal platform for the kind of product differentiation that reaches target users and penetrates key markets.
Voyage Linux is a Debian derived distribution that is best run on a x86-based embedded platforms such as WRAP, ALIX and Soekris 45xx/48xx boards.
a modular embedded Linux distribution for wireless routers, but can be used for other purposes as well. The entire system fits in 8 MB flash/16 MB RAM