CLIP STUDIO PAINT (2 year free trial - Wacom tablet promotion)

• probably the best art program I used so far
• Clip Studio Paint PRO subscription is about 45€
• Clip Studio Paint EX subscription not exactly abordable (202€)

MEDIBANG PAINT

• free program

SKETCHBOOK 8.7.1.0 (last free version)

• the PC version is locked under a paywall, but the price is abordable (about 25€)
• free version lacks of important tools, such alfa mask
• extremely simple and easy to use
• perfect to (of course?) draw sketchs

FIREALPACA

• free program
• currently testing the program
• pretty simple and intuitive to use

KRITA

• basically Clip Studio Paint free edition

IBIS PAINT

• free phone app
• I used it only a few times, but it's a really good app to use if you want to start drawing digitally and don't have a computer

ADOBE ILLUSTRATOR (graphic course)

• not exactly intuitive to use imho
• price not abordable (about 26€/month)