Ubuntu OS on the desktop is very famous brand and has a long heritage in the open source community, but rather than confine itself to the one platform, Canonical set out on the path to use the same core kernel and deliver the same platform across smartphones, tablets, the desktop and TVs.
Ubuntu Touch is a mobile version of the Ubuntu operating system which is being developed by Canonical Ltd and Ubuntu Community. It is designed primarily for touchscreen mobile devices such as smartphones and tablet computers. Ubuntu Touch is designed specifically for smartphones to power everything from entry-level handhelds to "high-end super-phones" that double as PCs. The OS is fairly cool, though. You swipe on the edges of the phone to bring up the app launcher, visit your home screen, multitask, and view menus instead of hardware buttons. The home screen is a bit different than what you see on iOS and Android, showing your open apps along the top and your shortcuts on the bottom. Lock screen features include: Missed calls and messages notifications, info-graphic animations, swipe left/right to unlock, lock screen security (Pin/Password), music control, date, time and alarm information.
There are many dark and light themes available in our drawer. Lhûn-Magol is a dark GTK Theme with combination of light blue color as foreground. This theme is based on Ambiance-Colors theme suite and Boomerang (not in active development) themes, it fits for those users who don't want their eyes to be hurt by bright colors or if you are a fan of dark theme. This dark GTK theme is compatible with Ubuntu 14.10 Utopic/Ubuntu 14.04 Trusty/Linux Mint 17.1 Rebecca/Linux Mint 17 Qiana/ and other related Ubuntu derivatives. This is very first theme of Tano, he mentioned "This is my first theme. I am sharing it so others can enjoy the theme but also because I want to learn more about theming. If you notice any errors or have suggestions for improval, please inform me.". Ultra-Flat icons used in following screenshots. You can use Unity Tweak Tool, Gnome-tweak-tool or Ubuntu-Tweak to change themes.

lhun magol dark theme
Minitube is a native YouTube client. With it you can watch YouTube videos in a new way: you type a keyword, Minitube gives you an endless video stream. Minitube does not require the Flash Player. Minitube is not about cloning the YouTube website, it aims to create a new TV-like experience. By consuming less CPU, Minitube preserves battery life and keeps your laptop cool. That's because Minitube does not use the Flash Player. Go full-screen and watch HD videos play smoothly. Subscribe to YouTube channels and be notified of new videos. No need to login with a YouTube account: Minitube takes care of it. Just search for something. Minitube automatically plays videos one after another. Sit back and enjoy.
Now a days most of the Linux desktops have their own Menu/launchers with search option like Ubuntu Unity has Dash, Gnome has Activities, KDE and Cinnamon has its own Menu, and so on. Launchers are used to search applications/files quickly as possible on finger tips. In past when Gnome didn't had Activities Menu then there was application Gnome-Do which still exist for current Linux versions but not widely used now and Gnome-Do is not been actively developed for a while. Native launchers can give you performance but if you want step forward and looking for an alternative for your Linux desktop then Synapse comes in handy.
synapse
Smaragd is unique design icon theme modified version of Menda icon theme by Anex, it is released under license Creative Commons by-sa. It is shaped in hexagonal design, such icon sets are difficult to find. This icon set contains icons from different icon projects such as Numix, Flattr, NitruxSA, and some Manjaro version graphics icons. It contains more than 13000+ icons. The good thing is that it is compatible with all Linux desktop environments such as Unity, Gnome, Cinnamon, Mate, KDE and others. This icon set is in active development and open for user requests, which means you can request icon if you found any missing icon in this set then report here. In following screenshots Ambiance-Blackout-Flat theme used. You can use Unity Tweak ToolGnome-tweak-tool or Ubuntu-Tweak to change themes/icons.
smaragd
LibreOffice is the power-packed free, libre and open source personal productivity suite for Windows, Macintosh and GNU/Linux, that gives you six feature-rich applications for all your document production and data processing needs: Writer, the word processor, Calc, the spreadsheet application, Impress, the presentation engine, Draw, our drawing and flowcharting application, Base, our database and database frontend, and Math for editing mathematics. Its clean interface and powerful tools let you unleash your creativity and grow your productivity.
LibreOffice 4.4 announcement: "LibreOffice 4.4 has got a lot of UX and design love, and in my opinion is the most beautiful ever," says Jan "Kendy" Holesovsky, a member of the Membership Committee and the leader of the design team. "We have completed the dialog conversion, redesigned menu bars, context menus, toolbars, status bars and rulers to make them much more useful. The Sifr monochrome icon theme is extended and now the default on OS X. We also developed a new Color Selector, improved the Sidebar to integrate more smoothly with menus, and reworked many user interface details to follow today’s UX trends."

libreoffice

libreoffice
UI Revamped

Themes available to change look

libreoffice

Release Highlights:
  • Digital signing of PDF files during the export process.
  • Installation of free fonts Carlito and Caladea to replace proprietary Microsoft C-Fonts Calibri and Cambria, to get rid of font related issues while opening OOXML files.
  • Addition of several new default templates, designed by volunteers.
  • Visual editing of Impress master pages, to remove unwanted elements, adding or hiding a level to the outline numbering, and toggling bullets on or off.
  • Improved import filters for Microsoft Visio, Microsoft Publisher and AbiWord files, and Microsoft Works spreadsheets.
  • Greatly expanded support for media capabilities on each platform.
  • Writer shapes can now have a Textbox, meaning that it's possible to have complex Writer content and full drawinglayer geometry for a shape at the same time.
  • Inclusion of new buttons in the Track Changes toolbar, along with a new set of icons.
  • The keyboard shortcut Ctrl+Shift+E has been associated with the recording of track changes.
  • The style dropdown now has a split menu to edit or update the selected style.
  • Page number in the statusbar are more easily understood when page number styles are used.
  • Spacing between elements was improved to work better in low-resolution screens and small windows and double-clicking in the blank statusbar field no longer opens the 'Fields' dialog.
  • Click behaviour was unified so that left-click results in an action or dialog appearing and right-click results in the display of a context menu.
  • Tooltips were added to all elements of the statusbar.
  • Word and character count now have thousand separators.
  • Bookmarks in Navigator can be named using any character that is accepted in HTML anchor names. Specifically, LibreOffice now accepts period (.) and colon (:).
  • Improved "Replace dashes" autocorrect feature: double dashes between numbers are replaced with en dash (–) instead of em dash (—).
  • Simplified input of special symbols by default autocorrect patterns: Trademark, copyright, registered symbols, Arrows, Subscript/superscript characters, and so on.
  • Middle Autocorrect wildcard patterns: Autocorrect wildcard patterns (text.* and .*text) introduced in 4.2.x, now possible to add .*text.* like patterns.
  • Formula Engine: Added AGGREGATE spreadsheet function for Excel interoperability.
  • The right-click context menu that appear for managing sheets now has icons for sheet operations.
  • When we have a table in impress, have modified a cell style and then add a new row or column it now inherits the style of the current row/column for the new one instead of using default values.
  • It is now possible to save an Impress/Draw file read-only and require a password to modify it.
  • Draw now uses the paper size specified in page formatting with printing.
  • The View menu was reorganized to better unify its items similar to Writer and Calc.
  • Now Math supports the basic 16 HTML colors.
  • The newly added colors can be inserted from the Elements docked bar.
  • Draw can now import Adobe PageMaker files (v. 6-7), via libpagemaker.
  • Both Writer and Draw can import files from MacDraw, MacDraw II and RagTime for Mac (v. 2-3), via libmwaw.
  • Writer can now import Sony BroadBand eBook (LRF) files, via libe-book.
  • It is possible to connect to SharePoint 2010/2013 directly from LibreOffice.
  • It is possible to connect to OneDrive directly from LibreOffice.
  • Rulers have smaller numbers and are now hidden by default.
  • The paragraph line spacing dropdown that was present only in the sidebar has been reworked so that it can be used in the main toolbar too, and was added there.
  • The "Bullets" and "Numbering" toolbar buttons now have drop-down menus so it easier to change the list style without opening the lists dialog.
  • Cut, Copy and Paste actions are now at the top of the context menu.
  • Writer now has the ability to access the Paste Special dialog via the context menu, reaching feature parity with Calc.
  • Font, Font size and Text alignment formatting options have been removed from the context menu: according to statistics were widely unused and their removal reduces visual clutter.
  • Writer now has an option to change the currently selected image to another graphic via the context menu, reaching feature parity with Impress and Draw.
  • New browser for Firefox themes with search and preview.
  • Images are now scaled proportionally by default in Calc and Impress/Draw as they were already in Writer.
  • New and improved icons have been added to the Tango, Sifr, and Oxygen icon themes.
  • Detailed changes can be found here.



Ultra-Flat icon theme is flat and beautiful based on Flattr icons. This icon set can work with all kind of themes dark/light/or any other color. There are two variants of this theme Blue and Orange, all icons are same in both variants except folders, so you can choose what fits with your theme. The good thing is that it contain icons for all Linux desktop environments such as Unity, Gnome, Cinnamon, Mate, KDE (KDE desktop is now supported) and others; KDE desktop is not supported yet, it is mentioned on icons page "Kde users : I noticed round icons look ugly under kde. At this time I don't know why but I will try to find a fix. Unfortunately, the theme doesn't support kde, sorry". With in this icon theme offers more than 4,500+ icons which are available as scalable and small size. This icon set is in active development and open for user requests, which means you can request icon if you found any missing in this icon theme, go to this page tell the app name of missing icon and report. Delorean Dark theme used in following screenshots. You can use Unity Tweak ToolGnome-tweak-tool or Ubuntu-Tweak to change themes/icons.
ultra flat
Ubuntu Touch is a mobile version of the Ubuntu operating system which is being developed by Canonical Ltd and Ubuntu Community. It is designed primarily for touchscreen mobile devices such as smartphones and tablet computers. It is the most awaited Linux mobile Operating System for Linux users. In order to give some feel of Ubuntu touch to the desktop, brahim saleem provided this theme...

ubuntu touch gtk

PS3 Media Server is a DLNA-compliant UPnP Media Server and it is cross-platform Media Server available for supports all major operating systems, with versions for Windows, Linux and Mac OS X because it is written in Java. Originally written to support the PlayStation 3, PS3 Media Server has been expanded to support a range of other media renderers, including smartphones, TVs, music players and more. The MPlayer and FFmpeg packages support the PS3 Media Server.
The program streams or trans-codes many different media formats with little or no configuration. It is powered by MEncoder, FFmpeg, tsMuxeR and AviSynth, which combine to offer support for a wide range of media formats. It features no codec packs to install, no folder configuration and pre-parsing or this kind of annoying thing, all your folders are directly browsed by the PS3, there is an automatic refresh, and real-time video transcoding via MEncoder.
eViacam is stands for "Enable Viacam" an award winning Facial Mouse software, it is a free, open-source and easy to use tool designed to control your mouse pointer with your head. It requires a standard webcam to perform and no additional hardware is required. This application is extremely useful for disable persons whom have difficulty to use keyboard and mouse, simply they can control their computer with just head movement and all operating system doesn't offer such functionality by own. You can use wired or wireless webcam with this tool, by running first time it help you configure your webcam easily, you can set motion acceleration, customize mouse pointer speed, pointer movement smoothness, dwelling time, different click options, and others features.
KDE Connect allows your device to communicate between your Linux and Android/Blackberry devices. Using KDE Connect you can receive notifications of your phone directly to your Linux desktop, or use KDE Connect as remote control for your Linux desktop. KDE Connect uses secure communication protocol in order to provide these services over the network, and also allows developers to create plugins for KDE Connect on top of it. Right now there are KDE Connect clients available for Android and Blackberry devices, and soon it will be available for iPhone.
Indicator for KDE Connect is a tool to integrate the desktop with your smartphone, this indicator is aiming to bring those integration on any system using libappindicator.
Install Wine 1.7.35 in Ubuntu 15.04 Vivid/14.10 Utopic/14.04 Trusty/Linux Mint 17.1/17/ and older version on Ubuntu 12.04/Mint 13

Wine lets you run Windows software on other operating systems. With Wine, you can install and run these applications just like you would in Windows. Wine enables Linux, Mac, FreeBSD, and Solaris users to run Windows applications without a copy of Microsoft Windows. Wine is free software under constant development. Other platforms may benefit as well.
winehq
Changes in this release:
  • Beginnings of support for OpenGL core contexts.
  • Initial support for glyph placement in DirectWrite.
  • Some more WBEM objects.
  • Support for surround sound in DirectSound.
  • Better text run support in DirectWrite.
  • Many HTML engine fixes.
  • More support for WBEM objects.
  • A few more C/C++ runtime functions.
  • Support for copy/paste commands in MSHTML.
  • Some more font support in DirectWrite.
  • Better handling for loss of focus in Direct3D windows.
  • Several more API Sets DLLs.
  • New version of the Mono engine.
  • A few more functions implemented in MSHTML.
  • Improved support for restoring display mode.
  • Font metrics improvements in DirectWrite.
  • Various bug fixes.

Install Winehq 1.7.35 via PPA in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

Install Winehq 1.7.35 from source in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:



You can download source of Wine 1.7.35 for other Distributions from Source Forge.
Wine stable versions available: Wine 1.6, Wine 1.5 (PPA, Source) and Wine 1.4
That's it
Smplayer is a free multimedia player released for Linux and MS Windows under the GPL License. It uses the award-winning MPlayer as playback engine which is capable of playing most video and audio formats (avi, mkv, wmv, mp4, mpeg... see list). It uses its own codecs, so you don't need to install any codec packs.
Enlightenment started as a project to build a Window Manager for X11. That was way back in 1996. It has grown much since. It still produces this Window Manager, but it has evolved to also cover Mobile, Wearable and TV UI needs for projects such as Tizen as well as traditional the “desktop” UI.
MDM is a Display Manager which is developed by Mint team for their operating system known as "Linux Mint" a popular Ubuntu derivative, MDM is based on GDM. It provides graphical configuration tools, which allows to change the themes, remote access, automatic and timed login, event scripting, language selection and it comes with more features than any other Display Manager currently available. There are several HTML and GDM themes designed by Linux Mint team and others for MDM display manager.