There are dozens of digital painting programs available on the internet. While there are many that require payment and are of professional quality, there are also plenty of programs that are free or offer simple user interfaces. Below are a few of the most popular programs used by both casual and professional digital artists. Look out for future posts with more programs!

• PaintTool SAI: PaintTool SAI is high quality and lightweight painting software, fully digitizer support, amazing anti-aliased paintings, provide easy and stable operation, this software make digital art more enjoyable and comfortable.
  • Free Trial? : Yes, 31 days
  • Cost: 5400JPY (in current exchange rates that is 48.25 USD)
  • Required OS: Windows 2000/XP/Vista/7/8/8.1/10
  • Website to purchase or find more information
• Photoshop: Create and enhance photographs, illustrations, and 3D artwork. Design websites and mobile apps. Edit videos, simulate real-life paintings, and more. From posters to packaging, basic banners to beautiful websites, unforgettable logos to eye-catching icons, Photoshop keeps the creative world moving. 
  • Free Trial? : Yes, 7 days
  • Cost: $20.99 per month (student and bundle discounts available)
  • Required OS: minimum Microsoft Windows 7 with Service Pack 1 (64-bit)*, Windows 10** (Version 1709 or later) or macOS version 10.12 (Sierra), macOS version 10.13 (High Sierra), or macOS version 10.14 (Mojave)
  • Website to purchase or find more information
• GIMP: GIMP is a cross-platform image editor available for GNU/Linux, OS X, Windows and more operating systems. It is free software, you can change its source code and distribute your changes. Whether you are a graphic designer, photographer, illustrator, or scientist, GIMP provides you with sophisticated tools to get your job done. You can further enhance your productivity with GIMP thanks to many customization options and 3rd party plugins.
  • Free Trial? : No, it’s free
  • Cost: Free
  • Required OS: minimum Windows 7 or over or i386, x86-64, ARM and AArch64 or macOS 10.9 Mavericks or over
  • Website to purchase or find more information