Krita Desktop is a free an open source painting and sketching application for windows, Linux and Mac OSX. It is mainly for concept artists, illustrators, matte and texture artists. You can Open the PSD files and you can also Load and save to PSD files. It comes with brush stabilizers and Pop up Palette. The brush stabilizer is a useful feature for shaky hand.
You can customize your brushes with 9 unique brush engines.You can import brush and texture packs from other artists and share your own tools to outhers. It comes with drawing assistant Tool that comes with 9 unique assistants to help you make that perfect shape. It also comes with mirror tools and layer management. It supports full color through LCMS for ICC and OpenColor IO for EXR. You can increase the speed of some process by enabling OpenGL.
Install Krita Desktop on Ubuntu Linux
Go to the above Krita Desktop download page and download the Linux .AppImage file in the Linux download section for the latest version of Krita Desktop for your computer according to your system architecture. (32bit or 64bit). And save the file in your default downloads folder (Home->Downloads)
Here the downloaded file name is krita-4.4.8-x86_64.appimage. Right click on the file and select Properties.
Then go to the Permissions tab and check the Allow executing files as program option.
Open your terminal using ctrl+alt+t keys and type the below commands in the terminal and hit enter.
Then type your Ubuntu password. Thats it.
Install Krita Desktop via PPA:
You can also install Krita Desktop via the official Krita Desktop PPA. In terminal Ctrl+alt+t run below commands one by one.
sudo add-apt-repository ppa:kritalime/ppa
sudo apt-get update
sudo apt-get install krita
Install Krita Desktop via Flatpak:
First install flatpak and flathub and restart your system. Then in terminal app run Krita Desktop flatpak installation command.
flatpak install flathub org.kde.krita
You can run Krita Desktop flatpak via
flatpak run org.kde.krita
You can also uninstall Krita Desktop via
sudo flatpak uninstall org.kde.krita