Add more apps & replace dead links

- Lynis
- Green Recorder
- Artha
- Gravit
- Komorebi
- Photivo

README.md

@@ -321,6 +321,7 @@ Brazilian Portugese version : [here](https://github.com/LewisVo/Awesome-Linux-So
 - [VSCode](https://code.visualstudio.com) - Visual Studio Code is a lightweight but powerful source code editor which runs on your desktop and is available for Windows, OS X and Linux. It comes with built-in support for JavaScript, TypeScript and Node.js and has a rich ecosystem of extensions for other languages (C++, C#, Python, PHP) and runtimes.[![Open-Source Software][OSS Icon]](https://github.com/Microsoft/vscode)
 
 ### Education
+- [Artha](http://artha.sourceforge.net/wiki/index.php/Home) - Artha is a free cross-platform English thesaurus that works completely off-line and is based on WordNet. [![Open-Source Software][OSS Icon]](http://artha.sourceforge.net/wiki/index.php/Download#Source)
 - [BibleTime](http://bibletime.info/) - BibleTime is a Bible study application based on the Sword library and Qt toolkit. [![Open-Source Software][OSS Icon]](https://github.com/bibletime/bibletime)
 - [Celestia](http://celestiaproject.net/) - The free space simulation that lets you explore our universe in three dimensions.[![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/celestia/files/Celestia-source/1.6.1/celestia-1.6.1.tar.gz/download)
 - [Chemtool](http://ruby.chemie.uni-freiburg.de/~martin/chemtool/) - Chemtool is a small program for drawing chemical structures on Linux. [![Open-Source Software][OSS Icon]](https://github.com/opp11/chemtool/blob/master/README.md)
@@ -414,6 +415,7 @@ Brazilian Portugese version : [here](https://github.com/LewisVo/Awesome-Linux-So
 #### Graphic Creation 
 - [Blender](https://www.blender.org/) - a free and open source complete 3D creation pipeline for artists and small teams.
 - [Cinepaint](http://www.cinepaint.org/) - Open source deep paint software 
+- [Gravit](https://www.designer.io/) - Gravit Designer is a full featured free vector design app right at your fingertip.
 - [Heron Animation](https://www.heronanimation.brick-a-brack.com/#download) - A free stop animation making program. 
 - [Inkscape](https://inkscape.org/en/) - A powerful, free design tool for you , whether you are an illustrator, designer, web designer or just someone who needs to create some vector imagery
 - [Karbon](https://www.calligra.org/karbon/) - An open source vector drawing program. [![Open-Source Software][OSS Icon]](https://www.kde.org/applications/graphics/karbon/development)
@@ -425,6 +427,7 @@ Brazilian Portugese version : [here](https://github.com/LewisVo/Awesome-Linux-So
 - [Synfig Studio](http://www.synfig.org/) - Open-source 2D animation software. [![Open-Source Software][OSS Icon]](https://github.com/synfig/synfig)
 - [Xara Extreme](http://www.xaraxtreme.org/) - Xara Xtreme for Linux is a powerful, general purpose graphics program for Unix platforms including Linux, FreeBSD[![Open-Source Software][OSS Icon]](http://www.xaraxtreme.org/Developers/develeopers-source-code-a-building.html)
 - [yEd Graph Editor](https://www.yworks.com/products/yed) - yEd is a powerful desktop application that can be used to quickly and effectively generate high-quality diagrams. Create diagrams manually, or import your external data for analysis. Our automatic layout algorithms arrange even large data sets with just the press of a button. 
+- [Vectr](https://vectr.com/) - Vectr is a free graphics software used to create vector graphics easily and intuitively. It's a simple yet powerful web and desktop cross-platform tool to bring your designs into reality.
 
 #### Image Editor
 - [Aftershot](http://www.aftershotpro.com/en/products/aftershot/pro/) - A powerful alternative to Adobe Photoshop. ![Nonfree][Money icon]
@@ -433,6 +436,7 @@ Brazilian Portugese version : [here](https://github.com/LewisVo/Awesome-Linux-So
 - [Hugin](http://hugin.sourceforge.net/) - an easy to use cross-platform panoramic imaging toolchain based on Panorama Tools.
 - [ImageMagik](http://www.imagemagick.org/script/index.php) - ImageMagick is a suite of command-line utilities for modifying and working with images. 
 - [Luminance HDR](http://qtpfsgui.sourceforge.net/) - Luminance HDR is an open source graphical user interface application that aims to provide a workflow for HDR imaging. [![Open-Source Software][OSS Icon]](https://github.com/LuminanceHDR/LuminanceHDR)
+- [Photivo](http://photivo.org/) - Photivo is a free and open source (GPL3) photo processor, handles your RAW and bitmap files (TIFF, JPEG, BMP, PNG and many more) in a non-destructive 16 bit processing pipe with gimp workflow integration and batch mode. It is intended to be used in a workflow together with digiKam/F-Spot/Shotwell and Gimp. [![Open-Source Software][OSS Icon]](https://github.com/google-code-export/photivo)
 - [RawTherapee](http://rawtherapee.com/) - A good looking but lesser known photo editing app. [![Open-Source Software][OSS Icon]](https://github.com/Beep6581/RawTherapee)
 
 #### Image Management
@@ -452,9 +456,10 @@ Brazilian Portugese version : [here](https://github.com/LewisVo/Awesome-Linux-So
 - [Radiance](http://www.radiance-online.org/) - Radiance - A Validated Lighting Simulation Tool[![Open-Source Software][OSS Icon]](https://www.radiance-online.org/download-install/radiance-source-code)
 - [Ramme](https://github.com/terkelg/ramme) - Unofficial Instagram desktop application. [![Open-Source Software][OSS Icon]](https://github.com/terkelg/ramme)
 - [Rapid Photo Downloader](http://damonlynch.net/rapid/download.html) - Rapid Photo Downloader Makes It Easy to Import Photos from a Camera or Smartphone.  [![Open-Source Software][OSS Icon]](https://launchpad.net/rapid/pyqt/0.9.0b2)
-- [Vectr](https://vectr.com/) - Vectr is a free graphics software used to create vector graphics easily and intuitively. It's a simple yet powerful web and desktop cross-platform tool to bring your designs into reality.
+
 
 #### Screen Recorder
+- [Green Recorder](https://github.com/foss-project/green-recorder) - A simple desktop recorder for Linux systems, supports recording audio and video on almost all Linux interfaces and  Wayland display server on GNOME session. [![Open-Source Software][OSS Icon]](https://github.com/foss-project/green-recorder)
 - [Kazam](https://launchpad.net/kazam) - An easy to use and very intuitive screen recording program that will capture the content of your screen and record a video file that can be played by any video player that supports VP8/WebM video format. [![Open-Source Software][OSS Icon]](https://code.launchpad.net/kazam)
 - [OBS Studio](https://obsproject.com/) - Free and open source software for video recording and live streaming. Download and start streaming quickly and easily on Windows, Mac or Linux. Share your gaming, art and entertainment with the world. [![Open-Source Software][OSS Icon]](https://github.com/jp9000/OBS)
 - [Peek](https://github.com/phw/peek) - Simple animated GIF screen recorder with an easy to use interface.[![Open-Source Software][OSS Icon]](https://github.com/phw/peek)
@@ -559,6 +564,7 @@ firewall zones to define the trust level of network connections or interfaces. [
 - [GnuPG](https://www.gnupg.org/) - Gnu Privacy Guard
 - [GuFW](http://gufw.org/) - One of the easiest firewalls in the world of Linux. [![Open-Source Software][OSS Icon]](https://code.launchpad.net/gui-ufw)
 - [IPrange](https://github.com/firehol/iprange) - A very fast command line utility for processing IP lists (merge, compare, exclude, etc). [![Open-Source Software][OSS Icon]](https://github.com/firehol/iprange) 
+- [Lynis](https://cisofy.com/lynis/) - Security auditing tool for Linux, macOS, and UNIX-based systems. Assists with compliance testing (HIPAA/ISO27001/PCI DSS) and system hardening. Agentless, and installation optional. [![Open-Source Software][OSS Icon]](https://github.com/CISOfy/lynis)
 - [OpenSSH](http://www.openssh.com/) - OpenSSH Secure Shell Server and Client
 - [Password Safe](https://pwsafe.org/) - Password Safe allows you to safely and easily create a secured and encrypted user name/password list. [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/passwordsafe/) 
 - [Pass](https://www.passwordstore.org/) - the standard unix password manager. [![Open-Source Software][OSS Icon]](https://git.zx2c4.com/password-store/)
@@ -644,6 +650,7 @@ firewall zones to define the trust level of network connections or interfaces. [
 - [KeePassXC](https://keepassxc.org/) - Cross platform password manager. A Community-maintained fork of KeePassX([dead](https://github.com/keepassx/keepassx/pull/204)) [![Open-Source Software][OSS Icon]](https://github.com/keepassxreboot/keepassxc)
 - [KeePass](https://www.keepass.info/) - Windows focused password manager, with some cross platform support through Mono.  
 - [KeeWeb](https://github.com/keeweb/keeweb) - Free cross-platform password manager compatible with KeePass [![Open-Source Software][OSS Icon]](https://github.com/keeweb/keeweb) 
+- [Komorebi](https://github.com/iabem97/komorebi/releases) - Komorebi is a background manager for all Linux platforms, provides fully customizeable backgrounds that can be tweaked at any time. [![Open-Source Software][OSS Icon]](https://github.com/iabem97/komorebi)
 - [KVM](http://www.linux-kvm.org/page/Main_Page) - KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/kvm/files/) 
 - [LastPass](https://lastpass.com/misc_download2.php) - Cross platform password <manager class="" Freeware="" Icon=""></manager>
 - [Nativefier](https://github.com/jiahaog/nativefier) - Make any web page a desktop application [![Open-Source Software][OSS Icon]](https://github.com/jiahaog/nativefier) 
@@ -882,12 +889,12 @@ firewall zones to define the trust level of network connections or interfaces. [
 
 ## Learn Linux
 
+- [Beginner's guide to Linux](https://www.linux.com/learn/complete-beginners-guide-linux%20)
 - [Learn Linux Command](http://linuxcommand.org/)
 - [GNU/Linux Command-Line Tools Summary](http://tldp.org/LDP/GNU-Linux-Tools-Summary/html/book1.htm)
 - [Learn Linux](https://linuxjourney.com/)
 - [Linux Course](https://www.edx.org/course/introduction-linux-linuxfoundationx-lfs101x-0)
-- [Linus Pocket Guide](http://www.opencore.eesc.usp.br/bruno/livros/Linux_Pocket_Guide.pdf)
-- [Linux Command Line with Bash - Tek Linux](https://www.youtube.com/watch?v=ltjPIpilqow)
+- [Linux Pocket Guide](http://www.tldp.org/LDP/Pocket-Linux-Guide/Pocket-Linux-Guide.pdf)
 
 ## Linux Hacking/Development