FROMAGE-HEAD  basic layers support would be perfect. I know there is seashore but it doesn't manage curves well (I'm doing 1 pixel line-drawings), and graphic converter is nice but still doesn't manage layers. That said it's a well crafted app. I love the bomb and the extensible toolbar (ie:shapes tools) is a clever idea. Oh and patterns à la macpaint would be cool too :).  
(Version 2.0)

BINARYMIX  This new version is perfect!

A complete paintbrush clone that works very well.

I especially like the new "place" text selection feature.

Not for pros obviously, but great for kids or just some doodles.  
(Version 2.0)

RORO01  Serious Drawback

Although it saves PNG images, it doesn't save them transparent.  
(Version 1.1)

FREEBSD  I think it takes a sense of humor to realize the value in this basic, wonderful drawing program. Does no more or less than it should!   
(Version 1.1)

MEX4ERIC  Crashed badly! Had to reboot.  
(Version 1.0)

MUSUBANA  A decent little app.

Doesn’t do much; for more advanced drawing, people should download Seashore.

However, if you just want to make a quick sketch, it’s perfect.  
(Version 0.8)

THREEDEE912  Simple and easy to use program. Free, and saves in multiple formats. Similar to Paint on Windows.  
(Version 0.6)

MUSUBANA  A paint program with no useable lasso tool?

No way.

Better download SeaShore.  
(Version 0.5)