Fractice is a free, open-source fractal explorer/renderer for XP/Vista. Its basic features include navigation, previews, history thumbnails, antialiasing, bitmap export, printing, palettes, and undo/redo. More advanced features include deep zoom, movie recording, posters, color cycling, batch rendering, and job control. The fractals currently supported are the Mandelbrot set, including cubic and higher-exponent variants, and the Newton.
Fractice is multithreaded and utilizes all cores on a multicore machine. Fractice also supports distributed processing, using any number of additional machines as rendering servers. Distributed processing is supported for exploring, as well as for movie and poster rendering.
Fractice also has VJ-oriented features, such as mixing between two fractals, mirroring with origin motion, palette tweening, DirectX full-screen Exclusive mode, dual-monitor support, and MIDI control of all parameters.