Sai allows a broad compatibility of files, so normally I start with my hand sketch exported, or direct digital sketch in Sai, and once I decide to use complex tools, I can save the file as a .PSD to continue in the other program, which is really useful. Why do I insist that the simplicity and quickness are virtues in Paint tool Sai? Because it has varied and effective tools for processing lineart, -whether in possession or not of drawing hardware like a graphic tablet- such as Line, Curve, and Pen. These specific tools used to DELINEATE are coupled with the possibility of constant manipulation thanks to its automatic NODES, resulting in a perfect layout and personal taste. Now, technically speaking, Sai is a free software specifically designed for drawing that you can download in various languages according to your needs, completely free and not at all heavy. You can open an image in any color mode, save as .jpg and .png with transparency, you can choose to work full screen, you can verify keyboard shortcuts, configure the image size and canvas, and more. In my opinion, Sai is made for convenience, and that's wonderful.

I love the Brush Stabliziler, it makes drawing really easy even with a less than great tablet. SAI also makes vectors easy with a quick tool to change the line widths. The color mixing is simple and lovely.

Super light and fast. Perfect for sketching/flats/coloring. Brush stabilizer is very helpful for control. Anti-alising is quite remarkable. Vectorial lines are smooth and everything feels more natural.