RetroBSD is a port of 2.11BSD Unix intended for embedded systems with fixed memory mapping. The current target is Microchip PIC32 microcontroller with 128 kbytes of RAM and 512 kbytes of Flash.
Friend Alternatives
Friend is described as 'The Friend Unifying Platform is a powerful open source framework that will allow developers to decouple their applications from technology silos. It will empower developers to swiftly deploy on and integrate with Ethereum and other decentralised technologies in a new blockchain' and is a operating system in the file management category. There are more than 100 alternatives to Friend for a variety of platforms, including Linux, Self-Hosted, BSD, Windows and Web-based apps. The best Friend alternative is Linux Mint, which is both free and Open Source. Other great apps like Friend are Ubuntu, Debian, Fedora and Arch Linux.
Alternatives list
Rackspace US, Inc. (NYSE: RAX) is an IT hosting company based in San Antonio, Texas. The company also has offices in Australia, the United Kingdom and The Netherlands[2] and data centers operating in Texas, Illinois, Virginia, the United Kingdom, and Hong Kong in late 2008.

Ubuntu Cloud is an open source Linux operating system designed to be used as a personal cloud server. It is based on the well known Ubuntu Linux distribution and recognized as an official Ubuntu flavor, distributed by Canonical.
Cost / License
- Free
- Open Source
Platforms
- Linux
Karoshi provides a simple graphical interface that allows for quick installation, setup and maintenance of a network.



Darwin is the Open Source operating system from Apple that forms the basis for Mac OS X, and PureDarwin is a community project to make Darwin more usable (some people think of it as the informal successor to OpenDarwin.

- 45 Pentoo alternatives
Pentoo is a security-focused livecd based on Gentoo. It's basically a Gentoo install with lots of customized tools, a customized kernel, and much more.



GNU-Darwin aims to be the most free software distribution. Our mission is two-fold: Focus on projects that leverage our unique combination of Darwin and GNU, and help users to enjoy the benefits of software freedom.



BeeFree OS is inspired from Ubuntu, Windows 7 and Linux Mint. The name is acronym for Beautiful, Effective, Efficient and Freedom.


+3
ULinux is based on openSUSE, and is a free linux distribution with the aim of combining the DIY-approach of Arch with the setup of Ubuntu.
Cost / License
- Free
- Open Source
Application types
Alerts
- Discontinued
Platforms
- Linux

Cost / License
- Free
- Proprietary
Application types
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux


Visopsys (VISual OPerating SYStem) is an alternative operating system for PC-compatible computers, written “from scratch”, and developed primarily by a single hobbyist programmer since 1997.


+5
miniBSD is a project to develop a set of scripts that shrinks a running FreeBSD system to a small sized miniBSD distribution suited for small media like USB pens and CF cards.




































