This article provides a list of many popular applications PPAs for Ubuntu 16.10 Yakkety Yak. It provides PPA addresses for LibreOffice, GIMP, Inkscape, SimpleScreenRecorder, and some more applications (I listed only free software here, please tell me if I made any mistake). It's not complete for now, I will update it when it's needed.

LibreOffice
https://launchpad.net/~libreoffice/+archive/ubuntu/ppa

sudo add-apt-repository ppa:libreoffice/ppa
sudo apt-get update
sudo apt-get install libreoffice 

SimpleScreenRecorder

sudo add-apt-repository ppa:maarten-baert/simplescreenrecorder
sudo apt-get update
sudo apt-get install simplescreenrecorder 


HandBrake

sudo add-apt-repository ppa:ricotz/experimental
sudo apt-get update
sudo apt-get install handbrake 


GIMP
https://launchpad.net/~otto-kesselgulasch/+archive/ubuntu/gimp

sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update
sudo apt-get install gimp 

Inkscape 
https://launchpad.net/~inkscape.dev/+archive/ubuntu/stable

sudo add-apt-repository ppa:inkscape.dev/stable
sudo apt-get update
sudo apt-get install inkscape 


Blender
https://launchpad.net/~thomas-schiex/+archive/ubuntu/blender

sudo add-apt-repository ppa:thomas-schiex/blender
sudo apt-get update
sudo apt-get install blender 

GRUB Customizer 
https://launchpad.net/~danielrichter2007/+archive/ubuntu/grub-customizer

sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer 

Boot Repair
https://launchpad.net/~yannubuntu/+archive/ubuntu/boot-repair

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install boot-repair 

Tor Browser

sudo add-apt-repository ppa:webupd8team/tor-browser
sudo apt-get update
sudo apt-get install tor-browser


VLC

sudo add-apt-repository ppa:videolan/stable-daily
sudo apt-get update
sudo apt-get install vlc 

Scribus 
https://launchpad.net/~scribus/+archive/ubuntu/ppa

sudo add-apt-repository ppa:scribus/ppa
sudo apt-get update
sudo apt-get install scribus 

Unetbootin 

sudo add-apt-repository ppa:gezakovacs/ppa
sudo apt-get update
sudo apt-get install unetbootin 

Terminix
https://launchpad.net/~webupd8team/+archive/ubuntu/terminix

sudo add-apt-repository ppa:webupd8team/terminix
sudo apt-get update
sudo apt-get install terminix 

Ubuntu SDK
https://launchpad.net/~ubuntu-sdk-team/+archive/ubuntu/ppa

sudo add-apt-repository ppa:ubuntu-sdk-team/ppa
sudo apt-get update
sudo apt-get install ubuntu-sdk-ide

Unity Desktop Environment
https://launchpad.net/~ubuntu-desktop/+archive/ubuntu/ppa

sudo add-apt-repository ppa:ubuntu-desktop/ppa
sudo apt-get update
sudo apt-get install unity 

Atom
https://launchpad.net/~webupd8team/+archive/ubuntu/atom/+index

sudo add-apt-repository ppa:webupd8team/atom
sudo apt-get update
sudo apt-get install atom 

GNOME Shell Extensions
https://launchpad.net/~gnome-shell-extensions/+archive/ubuntu/ppa

sudo add-apt-repository ppa:gnome-shell-extensions/ppa
sudo apt-get update


Eclipse
https://launchpad.net/~mmk2410/+archive/ubuntu/eclipse-ide-java

sudo add-apt-repository ppa:mmk2410/eclipse-ide-java
sudo apt-get update
sudo apt-get install eclipse-ide-java 


Android Studio
https://launchpad.net/~paolorotolo/+archive/ubuntu/android-studio

sudo add-apt-repository ppa:paolorotolo/android-studio
sudo apt-get update
sudo apt-get install android-studio 

Chromium
https://launchpad.net/~saiarcot895/+archive/ubuntu/chromium-dev

sudo add-apt-repository ppa:saiarcot895/chromium-dev
sudo apt-get update
sudo apt-get install chromium-browser 

FreeCAD
https://launchpad.net/~freecad-maintainers/+archive/ubuntu/freecad-daily

sudo add-apt-repository ppa:freecad-maintainers/freecad-daily
sudo apt-get update
sudo apt-get install freecad-daily 
 

Y PPA Manager
https://launchpad.net/~webupd8team/+archive/ubuntu/y-ppa-manager

sudo add-apt-repository ppa:webupd8team/y-ppa-manager
sudo apt-get update
sudo apt-get install y-ppa-manager 


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