Remmina is a free and open-source remote desktop application, it is written in C and GTK+, released under GNU GPL license, and only available for Unix/Linux based systems. Basically it aims to be useful for system administrators and for those who need to access remote computers. It supports multiple network protocols in an integrated and consistent UI, at the moment RDP, VNC, NX, SPICE, XDMCP and SSH protocols are supported. You can install Remmina plugins: RDP, VNC, NX, XDMCP, SSH, Telepathy



Features:
  • A GTK+ 3 application.
  • Maintain a list of connection profiles, organized by groups
  • Make quick connections by directly putting in the server address
  • Remote desktops with higher resolutions are scrollable/scalable in both window and full-screen mode.
  • View-port full-screen mode: remote desktop automatically scrolls when the mouse moves over the screen edge.
  • Floating toolbar in full-screen mode, allows you to switch between modes, toggle keyboard grabbing, minimize, etc.
  • Tabbed interface, optionally managed by groups.
  • Tray icon, allows you to quickly access configured connection profiles

Install in Ubuntu/Linux Mint:

Available for Ubuntu 17.10 Artful/17.04 Zesty/16.04 Xenial/14.04/Linux Mint 18/17/and other Ubuntu derivatives
To install Remmina in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:


Available as snap package, it can be installed on Ubuntu 17.10 Artful/17.04 Zesty/16.04 Xenial/14.04 Trusty/Linux Mint 18/17
To Install Remmina in Ubuntu open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:


Install in Fedora:

To install Remmina in Fedora open Terminal and copy the following commands in the Terminal:

For Arch Linux install it from here and for other distributions checkout this page.
That's it

Termius is a client terminal which has built-in Telnet and SSH, it was formerly known as Serverauditor, and it is cross-platform available for Linux, Windows, Mac, iOS and Android, it offers full Terminal emulation on all your devices. You can run multiple concurrent terminal sessions with SSH, Telnet and Mosh. It has a robust emulation environment with full Emacs, Vim and MC support. Special characters, colors and command line tools work exactly how you’d expect them to.

You don't have to worry about infrastructure and credentials, since they are organized very well and logically. It comes with powerful organization features. Combine a collection of hosts into a group with shared settings, easily configured at the top level. Effortlessly find what you’re looking for with tagging, search and rich previews.
Secure Sync AES-256: Hosts, Port Forwarding rules, Snippets and Keys (optional) can be synced across your all devices. All data is client-side encrypted, with zero knowledge cloud storage and 2FA.
Some little features that can help a lot and time savers like autocomplete, quick connect, snippets and history save you seconds every session, minutes every day and hours every week.
termius

termius

termius

Features:
  • Cross-platform available for Linux, Windows, Mac, iOS and Android
  • Secure sync with AES-256 encryption
  • Password and key authentication, Also support 2FA
  • Connect to multiple hosts
  • Organize hosts using Tags and Groups
  • Infrastructure and credentials, organized logically
  • Support for port forwarding
  • Color schemes and changeable fonts
  • Export and import keys
  • Quickly execute multiple sudo commands
  • Code Snippets
  • SFTP support

Termius is available as snap package from snappy store, it can be installed on Ubuntu 17.10 Artful/17.04 Zesty/16.04 Xenial/14.04 Trusty
To Install Termius SSH client in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:


To remove Termius run this command:


RSS readers are useful if you want to get latest updates from website(s). Alduin is a free and open-source RSS feed reader available for Linux and Windows, built using modern technologies like: Electron, React, TypeScript and Less, it has easy to use user-interface and suitable for all types of users. It has native system notification support, and additionally it supports podcast feeds too.
Using the Alduin RSS interface is fairly simple, just click on the plus shaped button, and it will pull new articles from that given feed url, you can delete already added feed sources, lock the side menu in place.


Currently Alduin is in still development state that means you don't get full-features product now like any other famous RSS reader but developer mentioned that it will continue to evolve and new features will be added to it. You can't group or organize sources, and can't choose how the information should be presented to you. Also it doesn't sync any web services.
The application is in heavy development and still there is not stable release, developer said he is making progress to evolve Alduin. At some point in the near future we will see stable release of Alduin.

Download Alduin


Tor is a free software designed to make communication anonymous. Tor directs Internet traffic through a free, worldwide, volunteer overlay network consisting of more than seven thousand relays to conceal a user's location and usage from anyone conducting network surveillance or traffic analysis. Tor makes it more difficult for Internet activity to be traced back (Warning: still possible). Tor's use is intended to protect the personal privacy of users, as well as their freedom and ability to conduct confidential communication by keeping their Internet activities from being monitored.

SelecTOR is a frontend GUI for the Tor application. It is free for Linux and open-source based on Java released under license GNU GPL-2, it acts as a Tor launcher and exit node chooser for browsers that support system proxying using PAC files. It can be used for security and anonymization purposes or to bypass some firewall. Simplifies the process of selecting Tor exit nodes and manages selective URL pattern based on routing via system proxying.

SelekTOR

Features:
  • Support for Google Chrome, Chromium, Firefox and most Mozilla based browsers without the need for add-ons.
  • Can be used with Privoxy.
  • You can quickly select Tor exit nodes by country.
  • Greatly simplifies the usage and configuration of Tor in client mode, SelekTOR does most of the hard stuff for you.
  • Nodes are now filtered to ensure that they support both HTTP & HTTPS, and thus ensuring greater reliability when used with web browsers.
  • Will continuously monitor and maintain a connection to the exit node with the best response time, with as little downtime as possible when switching.
  • As well as proxying all traffic through the active Tor node, SelekTOR can also do selective routing of traffic through the active tor circuit based on URL patterns.
  • Whois and Atlas Node details (pretty graphs) available with a single mouse click..
  • Needs very little configuration, the installation defaults will work for most people out of the box.
  • Currently runs on most Linux desktops XFCE, LXDE, Mate, Cinnamon, Gnome 3 Shell, KDE4, Unity, Pantheon, Enlightenment.
  • Built in proxy pattern editor, Import and Export pattern files as a single zip file.
  • Requires OpenJRE 1.7 or better this is usually supplied with your Linux distro, please ensure this is installed before installing SelekTOR.
  • Requires the latest Tor client 2.6.10 but will also work fine with the 2.4.x series.
  • Languages supported for Linux release English and French.

Install Tor Web Browser:

Available for Ubuntu 17.10 Artful/17.04 Zesty/16.04 Xenial/14.04 Trusty/Linux Mint 18/17/other Ubuntu derivatives
To Install Tor Browser in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:


Download and install SelekTOR

Download SelekTOR

Once you download deb file then run following commands (replace package name in the first command)

That's it

There are some animation applications available but Synfig made its way trough crowd-funding and it's been successful. It is powerful, free, open-source vector-based 2D animation software package, developed from the scratch for producing feature-film quality 2D animation with fewer resources and people, it is released under the GNU General Public License.
Synfig stores its animations in its own XML file format, often compressed with gzip. These files use the filename extension .sif (uncompressed), .sifz (compressed) or .sfg (zip container format). The files store vector graphics data, embed or reference external bitmap images, and also a revision history of the project. It can render to video formats such as AVI, Theora and MPEG, as well as animated graphics formats such as MNG and GIF. It can also render to a sequence of numbered image files, using formats such as PNG, BMP, PPM and OpenEXR.

Layers: Synfig supports a multitude of layers of various types; geometric, gradients, filters, distortions, transformations, fractal and a few others.
Bones: Full-featured bone system allows to create cutout animation using bitmap images or control your vector artwork. The Skeleton Distortion layer allows to apply complex deformations to bitmap artwork.
Sound support: Synfig has basic features for syncing your animation with soundtrack using Sound Layer. Linux users can get all benefits of full-featured audio editors through the JACK integration.

Features:
  • Ability to design the animation in the front-end and render it at a later time with the backend
  • Supports multitude of layers of different types
  • Requires less resources and people
  • Capability of simulating soft-shading using curved gradients within an area
  • Wide variety of other real-time effects that can be applied to layers or groups of layers
  • Ability to control and animate the width of lines at their individual control points
  • Ability to link any related data from one object to another
  • Works with High Dynamic Range Imaging.

Download Synfig Studio


Temps is a simple, free and open-source smart weather application, designed to stay on the desktop as a widget. It is cross-platform available for Linux, Windows and Mac. It is built using Electron, Menubar, Chart.js, and OpenWeatherMap technologies.
It does work with most of the desktops and lets you touch it visually. Basically it stays on the desktop as a widget and display current weather in any location around the world. It displays forecast for the following four days with current day.
Since this is a non-profit project, developer is not able to offer unlimited access to weather information that means you can signup to OpenWeatherMap API and create a free key for yourself.


Features:
  • Free and open-source
  • Actual weather information for any location
  • Four-Day weather forecast
  • Interactive hourly weather graph
  • Timezone & Geolocation support
  • Information directly in your menubar available
  • Rain, snow and thunder animation
  • Minimal and colorful design

Download zip file and extract it. Then use chmod +x Temps to make it executable from terminal and launch it ./Temps.

Download Temps Weather


Harmony is audio player inspired from iTunes, it is built with Electron and vanilla JS, available for Linux, Windows and Mac. It plays audio files locally and from cloud services as well. It is based on plugins, and plugins are available for Spotify, SoundCloud, Google Play Music, Hype Machine, Deezer, and local files.
It is skinable means you can write and install themes but it has two themes available other than default. Harmony can be controlled using keyboard shortcuts and media keys. Press ? to see the list of available shortcuts. It is responsive design player that means you can resize it however you want, make it compact or half screen or full screen, it will follow you. It uses the tray or the sound menu integration to control the playback even when the app isn't focused.
Developers can now create their own plugins, as it is possible for users to install third-parties in Harmony. You can checkout documentation for themes and plugins.

Inkscape is a free and open-source professional vector graphics application, it is cross-platform available for GNU/Linux, Windows and Mac. You can use Inkscape if you are either professional or hobbyist designer, using this software you can create wide variety of graphics such as illustrations, icons, logos, diagrams, maps and web graphics. Inkscape uses the W3C open standard SVG (Scalable Vector Graphics) as its native format.

CobiBird theme is designed to work in most of the Linux desktops including Gnome, Unity, Xfce, Lxde, Cinnamon, and Mate. It was based on Greybird theme with dark menus for a while but since version 0.8.2 the creator changed almost everything (from menubar items, menu adjustment, color selection fix, improves insensitive menus, to fixed menu separators) in this theme and now it is not based on Greybird Gtk. The initial version was released way back in 2013 and recently a new version of CobiBird has been released to support Gtk 3.22. We have added it to out PPA and it is now available for Ubuntu 17.10/17.04/16.04/14.04/Linux Mint 18/17. If you find any kind of bug or problem with this theme then report it to creator and it will get fixed in the next update.


Available for Ubuntu 17.10 Artful/17.04 Zesty/16.04 Xenial/14.04 Trusty/Linux Mint 18/17/and other Ubuntu derivatives
To install CobiBird theme in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

That's it

Caffeine is pretty famous utility designed for Linux to disable screen-lock and screensaver temporarily so you can focus on what you are doing on your system. It stays in the panel and fairly straightforward application. It can be useful either you are working or listening or watching something that players don't prevent computer from going into sleep mode or prevent screensaver.
Without caffeine you need to go to power management in the system settings then disable sleep and also screensaver, Caffeine solves this issue and it comes in handy as well because you can activate/deactivate it right from system tray just with a single click.


Available for Ubuntu 17.04 Zesty/16.04 Xenial/14.04 Trusty/Linux Mint 18/17/other related Ubuntu derivatives
To install Caffeine Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:


That's it

ownCloud is a cloud hosting solution which can be deployed at home and using it locally or access it from anywhere. It functions similar to Dropbox/Google Drive and so on but with more functionality. It is open-source, free to use that means anyone can create a private server at home/office or for business. ownCloud also support online services like Google Drive, with online document editing, calendar and contact synchronization, and more.
Now you don't have to pay anyone in order to host your data because you store your data in your own server and access it using ownCloud from any device inside network and from anywhere in the world (you have to configure it). Its openness eschews enforced quotas on storage space or the number of connected clients, instead having hard limits (like on storage space or number of users) defined only by the physical capabilities of the server.

Geary is a free and open-source desktop email application, developed for Linux users written vala language and released under GNU LGPL-v2.1 license. It is simple and straightforward to setup and has modern user interface. It shows email messages as conversations which lets you read a complete discussion without having to find and click from message to message.
It supports almost every major email provider such as Yahoo, Gmail, Outlook and so on, as well as other email services either your own or by some company using IMAP configuration. It notifies you for the new email using desktop notifications so you will never miss an email. It's interface easy and straightforward and email setup is fairly simple. Further more it lets you search and organize your emails easily.


Features:
  • Modern and straightforward interface
  • Quick email account setup
  • Shows related messages together in conversations
  • Fast, full text and keyword search
  • Full-featured HTML and plain text message composer
  • Desktop notification of new mail
  • Compatible with GMail, Yahoo! Mail, Outlook.com and other IMAP servers
  • Ability to answer directly in conversations or open it in a separate window
  • Signature support
  • Support for sending as another identity

To install Geary email client in Debian/Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

Available for Ubuntu 17.04 Zesty/16.04 Xenial/Linux Mint 18/other related Ubuntu derivatives
To install Geary email client (Dev builds) in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:


Available for Ubuntu 16.04 Xenial/14.04 Trusty/Linux Mint 18/17/other related Ubuntu derivatives
To install Geary email client (Stable releases) in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:


That's it

If you have CDs laying around and you have some special tracks in them then you can extract them and listen again on your current devices. All you need is a CD drive and little bit time. Your physical audio collection can become digital and modern again. There are some online services also available for this kind of task but it is good idea to do it by offline application and it is pretty easy to do.
Flacon is an application designed to extract audio files individually or entire album from Audio CD. You can rip audio CDs in order to save your favorite album on your system or transfer in your mobile/handheld device. To do this, it uses information from the appropriate CUE file. Besides, Flacon makes it possible to conveniently revise or specify tags both for all tracks at once or for each tag separately.


Features:
  • Supported input formats: WAV, FLAC, APE, WavPack, True Audio (TTA).
  • Supported out formats: FLAC, WAV, WavPack, AAC, OGG or MP3.
  • Replay Gain analysis (album-gain and track-gain modes).
  • Multi-threaded conversion process.
  • Automatic character set detection for CUE files.
  • Generation of the pertrack CUE file in the output dir.

Available for Ubuntu 17.04 Zesty/16.04 Xenial/14.04 Trusty/Linux Mint 18/17/and other Debian and Ubuntu derivatives
To Install Flacon Audio Ripper in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:


To Install Flacon Audio Ripper in Debian/its derivatives open Terminal and copy the following commands in the Terminal:

For other distributions checkout this page.
Did you find it useful? Let us know in the comment below!

ReText is a simple and powerful editor for Markup languages (such as reStructuredText and Markdown), it is written in Python programming language. It is basically compiled for Linux and other POSIX compatible platforms, theoretically it can work on other operating systems as well but you have to port it by yourself. Since it is in active development you can submit bugs if find at any point.
You can control its output formatting. The files it works with are plain text files, however it can export to PDF, HTML and other formats.

retext editor

Markdown extensions: Extra extension set is enabled by default. Math extension is enabled and can be used with the WebKit renderer.
Export Extensions: Export Extensions were introduced in ReText 3.0 and allow you to add your own export functions to ReText. These extensions work without needing to save the original file — ReText will write a temporary file in original markup or in HTML, depending on what arguments you specify in the command.
Table editing mode: The idea of table editing mode is that even though you may generate nice output in lots of different formats, it is still useful to have nice-looking input as well.
Checkout complete wiki here.

Available for Ubuntu 17.10 Artful/17.04 Zesty/16.04 Xenial/14.04 Trusty/Linux Mint 18/17/and other Debian and Ubuntu derivatives
To Install ReText Editor in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following command in the Terminal:


You can download ReText's source and compile it for other Linux distribution.

That's it