Fraqtive - is a program for drawing Mandelbrot and Julia fractals. It uses a very fast algorithm and generates high quality, smooth images. It is fully interactive, allowing for real-time mouse navigation and dynamic generation of the Julia fractal preview. OpenGL-rendered 3D view of the fractals is also supported. It is extremely fast - display of Mandelbrot and Julia sets, zooming in or out is almost realtime (even on older hardware).
Mac OS X 10.3 or later,
Trolltech's Qt/Mac 3.3 C++ framework - a download link for a binary installer of Qt/Mac 3.3.4 (GPL/QPL edition is provided with th e installer)