GIMP
Open Source
GIMP stands for GNU Image Manipulation Program which is an opensource image editor program supporting almost every popular image formats.
Photopea
Free
Photopea is a free online image editor, that runs without plugins. It can both read and save PSD files.
Polarr
Freemium
Polarr is a photo editing software.
Corel AfterShot Pro
Commercial
Corel AfterShot Pro is a raw image processing software.
Compare Corel PaintShop Pro with alternatives
Compare GIMP and Corel PaintShop Pro and decide which is most suitable for you.
Compare Polarr and Corel PaintShop Pro and decide which is most suitable for you.
Compare Photopea and Corel PaintShop Pro and decide which is most suitable for you.
Compare Corel AfterShot Pro and Corel PaintShop Pro and decide which is most suitable for you.