GMIP is claimed to be a 'Photoshop' under Linux. The biggest highlight is it is free of charge, so considering the high price of Photoshop, GIMP is the best choice, sometimes.
GIMP has the very professional abilities of photo processing and first-class color management.
But of course, you need to use other FREE programs together to let the functions more powerful.
The product is applicable to As GIMP is a bit complicated and has too much learning curve, it will take a long time to get started, but fortunately, many GIMP loyal users have created a large number of tutorials. You can find relevant information about all the problems, so it is also suitable for beginners. GIMP Tutorials
Highlight: It's FREE, GIMP provides top-notch color management features to ensure high-fidelity color reproduction across digital and printed media.
Corel Painter - Rich brushes, real brushstrokes, and is often used in Concept Art design
The most highlighted feature is it provides rich brushes, 900 brushes and a 2.5D brush toolset, which can imitate almost all the real brushes in the world, and the brushstrokes are very real. And each brush has a lot of options and parameters.
Besides, it adds a lot of tools in the new version, that is commonly used by many artists, like the fixed color palette. If you use it with Surface Dial, you will be more convenient for painting.
It also supports Android and iOS, that is to say, you can make your creation anytime with your iPad or your mobile phone.
The product is applicable to As a well-known company, Corel Painter provides the Essentials version for the beginners and also has the Professional version at a price of hundreds of dollars. So it's both suitable for beginners or art workers.
Highlight: Provides rich brushes, and supports multiple platforms
Sai is a drawing software product with a long history. It's very popular in cartoonists lovers and artist workers.
Its watercolor paint effects are so good, and the color mix function can imitate watercolor. The whole effect feels smooth and fashionable.
The product is applicable to Compared to the PS, SAI is easy to use, and the learning curve requires not too much. There are also many simple tutorials for the users, just spend a few weeks, you can use it as a master. It’s very suitable for beginners and comic lovers. BTW, its update is not frequent, and the 2nd version is just released in 2019 since it first released in 2008.
Highlight: It's very easy to get start, and clear brushstrokes.
Clip Studio Paint - The best choice for concept artists, illustrators & designers, comic artists, manga artists & animators
The most versatile drawing software for animation, comics and commercial illustrations
Convert images and 3D models into lines and dot shading
Customizable 3D figures with new AI posing
The product is applicable to Since 2015, when Comic Studio (Manga Studio) stopped updating, Clip Studio Paint became the successor. This product is the Top 1 tool in the comics industry. Compared to Sai, CSP is more professional and more suitable for business. Many well-known comic companies in Japan change Easy Paint Tool SAI to CSP, which is ideal for art workers.
Highlight: 3D models conversion, can be used to make animation, ranks Top 1 in the comic industry.
ArtRage - A digital drawing software ideal for oils and watercolors.
When you start to run the program, you will find a semi-circular brush panel at the bottom left of the screen and a color panel at the bottom right. You can quickly access both tools. There is also a small "panel" with extra options hovered over the circle.
After you finish to choose the color and brush, the selection interface will disappear automatically, so you can start to paint on the full-screen canvas, so amazing!
One of ArtRage's most exciting features is called "real color blending", perfect for digital painting in oil painting and watercolor style.
The product is applicable to As its much concise and convenient UI, no complicated post-processing functions, it’s very suitable for the oils and watercolors painting.
Adobe Illustrator - A digital industry-standard vector art of illustration Software idea for print, web, video and mobile.
As Adobe Illustrator is so popular as Photoshop, so I put it at the end of this article. Compared to Photoshop, its works can be infinitely enlarged, but Photoshop’s work can not, so we can regard it as the ultimate drawing program. Ai can realize any effects you want, but because of its powerful features, the learning curve will cost users too much.
So there is no need to introduce this well-known product too much, let's enjoy the excellent works made by Ai.