Will Paint Tool Sai work on my Mac X El Captain?
Unfortunately, it won't. Try searching an alternative. I suggest you use Pro Paint for Mac, an editor with similar to Paint Tool Sai tools, that is compatible with Mac X El Captain.
Alter the Tux Paint's (drawing app for kids) behavior.
Edit and perfect any type of image with advanced photo-editing features.
Image editing and photo retouching tool.
Will Paint Tool Sai work on my Mac X El Captain?
Unfortunately, it won't. Try searching an alternative. I suggest you use Pro Paint for Mac, an editor with similar to Paint Tool Sai tools, that is compatible with Mac X El Captain.