MyBrushes Paint Tool Sai for Mac is a top-notch paint software for Mac OS X. It's an effective alternative to both Microsoft Paint and Apple Mac Paint, built on a previous drawing software called Paintbrush for Mac.

One of the primary features of MyBrushes Paint Tool Sai is its layering system. You can create unlimited layers, and even every layer is unlimited in size. You can create, delete, reorder, duplicate and clear a layer, and copy and paste layers. The software also supports layer's translation, rotation, and more.
Another unique feature of the software is the painting studio. You get an unlimited size canvas where you can paint, and you can also record and playback your drawing videos. The software has a powerful painting engine that supports fast, smooth, and responsive painting with excellent precision & performance.
In addition to the paint features, MyBrushes Paint Tool Sai also includes an image editing studio. You can input text, import images or photos from your devices, and draw over your images. The software has instant image processing and image alpha channel, and you can import lots of image formats.
The advanced brush system of MyBrushes Paint Tool Sai is also worth noting. The software continuously auto-saves your work, so you never lose work again. The pressure-sensitive can be adjusted, and you have access to 100 shapes high-quality natural brushes, such as brush, pencil, pen, airbrush, watercolor brush, chalk, charcoal, neon pens, and special effect pens. You can adjust the brush size rapidly and preview the final effect of each brush style.
As for the interface, MyBrushes Paint Tool Sai has a simple and powerful one. You have access to the unlimited undo/redo function, an eraser tool to correct possible mistakes, and more.
Finally, the software also includes an artwork gallery where you can export your artwork to an image file, share your artwork to social media, and access 50 backgrounds templates in the template library.
Overall, MyBrushes Paint Tool Sai for Mac is a robust software that delivers an impressive set of painting and editing features.
Version 2.0.5:
1. Add drawing rectangle, circle, line, polygon tools.
2. Support selection with rectangle circle or polygon.
3. Enhancement for OS X El Caption.