List of BSD adopters

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This is a list of companies, organizations and individuals who have moved from other operating systems to a BSD system. In the open-source operating systems field, it can be an alternative to Linux distributions.

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In computing, cross-platform software is computer software that is designed to work in several computing platforms. Some cross-platform software requires a separate build for each platform, but some can be directly run on any platform without special preparation, being written in an interpreted language or compiled to portable bytecode for which the interpreters or run-time packages are common or standard components of all supported platforms.

<span class="mw-page-title-main">Syllable Desktop</span> Operating system

Syllable Desktop is a discontinued free and open-source lightweight hobbyist operating system for Pentium and compatible processors. Its purpose was to create an easy-to-use desktop operating system for the home and small office user. It was forked and expanded AtheOS after the developer of AtheOS moved on to other projects in July 2002.

The Open Sound System (OSS) is an interface for making and capturing sound in Unix and Unix-like operating systems. It is based on standard Unix devices system calls. The term also sometimes refers to the software in a Unix kernel that provides the OSS interface; it can be thought of as a device driver for sound controller hardware. The goal of OSS is to allow the writing of sound-based applications that are agnostic of the underlying sound hardware.

In software engineering, a compatibility layer is an interface that allows binaries for a legacy or foreign system to run on a host system. This translates system calls for the foreign system into native system calls for the host system. With some libraries for the foreign system, this will often be sufficient to run foreign binaries on the host system. A hardware compatibility layer consists of tools that allow hardware emulation.

chroot Operation that changes the apparent root directory in Unix-like systems

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<span class="mw-page-title-main">XNU</span> Computer operating system kernel

XNU is the computer operating system (OS) kernel developed at Apple Inc. since December 1996 for use in the Mac OS X operating system and released as free and open-source software as part of the Darwin OS, which, in addition to being the basis for macOS, is also the basis for Apple TV Software, iOS, iPadOS, watchOS, visionOS, and tvOS.

"Zero-copy" describes computer operations in which the CPU does not perform the task of copying data from one memory area to another or in which unnecessary data copies are avoided. This is frequently used to save CPU cycles and memory bandwidth in many time consuming tasks, such as when transmitting a file at high speed over a network, etc., thus improving the performance of programs (processes) executed by a computer.

OS-level virtualization is an operating system (OS) virtualization paradigm in which the kernel allows the existence of multiple isolated user space instances, including containers, zones, virtual private servers (OpenVZ), partitions, virtual environments (VEs), virtual kernels, and jails. Such instances may look like real computers from the point of view of programs running in them. A computer program running on an ordinary operating system can see all resources of that computer. Programs running inside a container can only see the container's contents and devices assigned to the container.

There are a number of Unix-like operating systems based on or descended from the Berkeley Software Distribution (BSD) series of Unix variant options. The three most notable descendants in current use are FreeBSD, OpenBSD, and NetBSD, which are all derived from 386BSD and 4.4BSD-Lite, by various routes. Both NetBSD and FreeBSD started life in 1993, initially derived from 386BSD, but in 1994 migrated to a 4.4BSD-Lite code base. OpenBSD was forked from NetBSD in 1995. Other notable derivatives include DragonFly BSD, which was forked from FreeBSD 4.8.

<span class="mw-page-title-main">FreeBSD</span> Free and open-source Unix-like operating system

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<span class="mw-page-title-main">Hyper-V</span> Native hypervisor by Microsoft

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libvirt Management tool

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Emby is a media server designed to organize, play, and stream audio and video to a variety of devices. Emby's source code was mostly open with some closed-source components as of August 2017, releases of the software published via the Emby website are however proprietary and cannot be replicated from source due to the build scripts also being proprietary. As of version 3.5.3 Emby has been relicensed and is now closed-source, while open source components will be moved to plugins. Due to this, a free open source fork of Emby was created called Jellyfin. Emby uses a client–server model.

Comparison of user features of operating systems refers to a comparison of the general user features of major operating systems in a narrative format. It does not encompass a full exhaustive comparison or description of all technical details of all operating systems. It is a comparison of basic roles and the most prominent features. It also includes the most important features of the operating system's origins, historical development, and role.

References

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