Unity Desktop Environment has been discontinued. Similar apps include KDE Plasma, which is free and open source. Other options are GNOME, Xfce, Cinnamon and LXQt. There's no shortage of Desktop Environments like Unity Desktop Environment, with more than 25 alternatives for Linux, Windows and Mac.
Plasma is a cross-device work environment by the KDE Community where trust is put on the user's capacity to best define their own workflow and preferences.
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An easy and elegant way to use your computer, GNOME is designed to help you have the best possible computing experience.
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Xfce (pronounced as four individual letters) is a free software desktop environment for Unix and other Unix-like platforms, such as Linux, Solaris and BSD. It aims to be fast and lightweight, while still being visually appealing and easy to use.
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Many users of GNOME 2 dislike GNOME 3. MATE is a fork of the good old GNOME 2. It provides an intuitive and attractive desktop environment using traditional metaphors for Linux and other Unix-like operating systems.
The "Lightweight X11 Desktop Environment" is an extremely fast-performing and energy-saving desktop environment.
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The Budgie Desktop is a feature-rich, modern desktop designed to keep out the way of the user. It consists of a number of components to provide a more complete desktop experience.
Enlightenment is a Window Manager, Compositor and Minimal Desktop for Linux (the primary platform), BSD and any other compatible UNIX system.
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Animated Windows dock for fast access to apps, shortcuts and files, featuring auto-hide, drag and drop launching, fully customizable color, size and position, support for multiple docks, shortcut management, enhanced desktop organization and visual effects.
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Cairo is a desktop environment for Windows. Its goal is to develop a desktop experience that increases productivity and advances current technology standards.
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Docky is a full fledged dock application that makes opening common applications and managing windows easier and quicker. Docky is fully integrated into the GNOME Desktop and features a no non-sense approach to configuration and usage. It just works.
