Fraqtive is an open source, multi-platform generator of the Mandelbrot family fractals. It uses very fast algorithms supporting SSE2 and multi-core processors. It generates high quality anti-aliased images and renders 3D scenes using OpenGL. It allows real-time navigation and dynamic generation of the Julia fractal preview.
Version 0.4.8 extends the capability of Fraqtive to generate very high quality images and series of images (animations). The new "Multi-Sampling" setting makes it possible to generate images using multiple samples per pixel (2x2, 4x4 or 8x8 samples). This greatly improves the quality of images, especially in the "noisy" areas.
Multi-sampling works by simply rendering a larger image and then scaling it down to the requested size. The maximum size of the resulting image depends on the multi-sampling setting. Without multi-sampling, the maximum size is 30720 x 17280 pixels (in the 64-bit version), while with maximum 8x8 multi-sampling, the maximum resolution is 3840 x 2160 pixels (commonly known as the 4K resolution).
This is an example of an animation rendered using Fraqtive, with 4x4 multi-sampling used together with anti-aliasing and blending:
There was also a bug in version 0.4.7 which caused Fraqtive to look for presets and bookmarks in the wrong location on Windows. This bug is now fixed in version 0.4.8.