Q22a: Where can I obtain software packages to generate fractals?  
A22a:  
For X windows:  
 xmntns and xlmntn: these generate fractal mountains. They can be obtained  
  from ftp: ftp.uu.net:/usenet/comp.sources.x/volume8/xmntns  
  [137.39.1.9].  
 xfroot: generates a fractal root window.  
 xmartin: generates a Martin hopalong root window.  
 xmandel: generates Mandelbrot/Julia sets.  
 xfroot, xmartin, xmandel are part of the X11 distribution.  
 lyap: generates Lyapunov exponent images. Ftp from:  
  ftp.uu.net:/usenet/comp.sources.x/volume17/lyapunov-xlib .  
 spider: Uses Thurston's algorithm for computing postcritically finite  
  polynomials, draws Mandelbrot and Julia sets using the Koebe  
  algorithm, and draws Julia set external angles. Ftp from:  
  lyapunov.ucsd.edu:pub/inls-ucsd/spider .  
 xfractal: fractal drawing program. Ftp from: clio.rz.uni-  
  duesseldorf.de:/X11/uploads [134.99.128.3].  
  
Distributed X systems:  
 MandelSpawn: computes Mandelbrot/Julia sets on a network of  
 machines. Ftp  
  from: export.lcs.mit.edu:/contrib [18.24.0.12] or  
  funic.funet.fi:/pub/X11/contrib [128.214.6.100] in mandelspawn-  
  0.06.tar.Z.  
 gnumandel: computes Mandelbrot images on a network. Ftp from:  
  ftp://informatik.tu-muenchen.de/pub/GNU/ [131.159.0.110].  
  
For SunView:  
 Mandtool: A Mandelbrot computing program. Ftp from:  
  ftp://spanky.triumf.ca/fractals/programs/ ; code is in M_TAR.Z .  
  
For Unix/C:  
 lsys: generates L-systems as PostScript or other textual output. No  
  graphical interface at present. (in C++) Ftp from:  
  ftp.cs.unc.edu:/pub/leech/lsys.tar.Z .  
 lyapunov: generates PGM Lyapunov exponent images. Ftp from:  
  ftp.uu.net:/usenet/comp.sources.misc/volume23/lyapuov . SPD: contains  
  generators for fractal mountain, tree, recursive tetrahedron. Ftp  
  from: ftp://princeton.edu/pub/ [128.112.128.1].  
 Fractal Studio: Mandelbrot set program; handles distributed computing.  
  Ftp from archive.cs.umbc.edu:/pub/peter/fractal-studio  
  [130.85.100.53].  
 Xmountains: An X11-based fractal landscape generator. Ftp from  
  ftp.epcc.ed.ac.uk:/pub/personal/spb/xmountains .  
  
For Mac:  
 LSystem, 3D-L-System, IFS, FracHill, Mandella and a bunch of others are  
  available from ftp://uceng.uc.edu/pub/wuarchive/edu/math/mac/  
  [129.137.189.1] or ftp://wuarchive.wustl.edu/edu/math/mac/ .  
  (These are also available in New Zealand at ccu1.auckland.ac.nz.)  
 fractal-wizard.hqx, julias-dream-107.hqx, mandella-87.hqx, and others are  
  under app in the info-mac archive: ftp://sumex-aim.stanford.edu/  
  [36.44.0.6], or a mirror such as  
  ftp://plaza.aarnet.edu.au/micros/mac/ [139.130.4.6].  
 mandel-tv: a very fast Mandelbrot generator. Under sci at info-mac.  
 There are also commercial programs, such as IFS Explorer and Fractal Clip  
 Art, which are published by Koyn Software (314) 878-9125.  
  
For NeXT:  
 Lyapunov: generates Lyapunov exponent images. Ftp from:  
  ftp://nova.cc.purdue.edu/pub/next/2.0-release/ .  
  
For MSDOS:  
 DEEPZOOM: a high-precision Mandelbrot program for displaying highly zoomed  
  fractals. Ftp from spanky.triumf.ca [142.90.112.1] in  
  [pub.fractals.programs.ibmpc] depzm13.zip.  
 Fractal WitchCraft: a very fast fractal design program. Ftp from:  
  ftp://garbo.uwasa.fi/pc/demo/ [128.214.87.1].  
 CAL: generates more than 15 types of fractals including Mandelbrot,  
  Lyapunov, IFS, user-defined formulas, logistic equation, and  
  quaternion julia sets. Ftp from: ftp://oak.oakland.edu/pub/msdos/  
  [141.210.10.117] (or any other Simtel mirror) in frcal035.zip.  
 Fractal Discovery Laboratory: designed for use in a science museum or  
  school setting. The Lab has five sections: Art Gallery ( 72 images --  
  Mandelbrots, Julias, Lyapunovs), Microscope ( 85 images -- Biomorph,  
  Mandelbrot, Lyapunov, ...), Movies (165 images, 6 "movies":  
  Mandelbrot Evolution, Splitting a Mini-Mandelbrot, Fractal UFO, ...),  
  Tools (Gingerbreadman, Lorentz Equations, Fractal Ferns, von Koch  
  Snowflake, Sierpinski Gasket), and Library (Dictionary, Books and  
  Articles). Sampler available from Compuserver GRAPHDEV Lib 4 in  
  DISCOV.ZIP, or send high-density disk and self-addressed, stamped  
  envelope to: Earl F. Glynn, 10808 West 105th Street, Overland Park,  
  Kansas 66214-3057.  
 WL-Plot: plots functions including bifurcations and recursive relations.  
  Ftp from ftp://wuarchive.wustl.edu/edu/math/msdos/ in wlplt231.zip.  
 There are many fractal programs available from  
  ftp://oak.oakland.edu/pub/msdos/ [141.210.10.117]:  
  forb01a.zip: Displays orbits of Mandelbrot mapping. C/E/VGA  
   fract30.arc: Mandelbrot/Julia set 2D/3D EGA/VGA Fractal Gen  
   fractfly.zip: Create Fractal flythroughs with FRACTINT  
   fdesi313.zip: Program to visually design IFS fractals  
   frain182.zip: FRACTINT v18.1 EGA/VGA/XGA fractal generator  
   frasr182.zip: C & ASM src for FRACTINT v18.1 fractal gen.  
   frcal040.zip: Fractal drawing program: 15 formulae available  
   frcaldmo.zip: 800x600x256 demo images for FRCAL030.ZIP  
  
For Windows:  
 dy-syst.zip. This program explores Newton's method, Mandelbrot set, and  
  Julia sets. Ftp from mathcs.emory.edu:/pub/riddle .  
  
For Amiga: (all entries marked "ff###" are .lzh files in the Fish Disk set  
 available at ftp://ux1.cso.uiuc.edu/amiga/ and other sites)  
 General Mandelbrot generators with many features: Mandelbrot (ff030),  
  Mandel (ff218), Mandelbrot (ff239), TurboMandel (ff302), MandelBltiz  
  (ff387), SMan (ff447), MandelMountains (ff383, in 3-D), MandelPAUG  
  (ff452, MandFXP movies), MandAnim (ff461, anims), ApfelKiste (ff566,  
  very fast), MandelSquare (ff588, anims)  
 Mandelbrot and Julia sets generators: MandelVroom (ff215), Fractals  
  (ff371, also Newton-R and other sets)  
 With different algorithmic approaches (shown): FastGro (ff188, DLA),  
  IceFrac (ff303, DLA), DEM (ff303, DEM), CPM (ff303, CPM in 3-D),  
  FractalLab (ff391, any equation)  
 Iterated Function System generators (make ferns, etc): FracGen (ff188,  
  uses "seeds"), FCS (ff465), IFSgen (ff554), IFSLab (ff696, "Collage  
  Theorem")  
 Unique fractal types: Cloud (ff216, cloud surfaces), Fractal (ff052,  
  terrain), IMandelVroom (strange attractor contours?), Landscape  
  (ff554, scenery), Scenery (ff155, scenery), Plasma (ff573, plasma  
  clouds)  
 Fractal generators: PolyFractals (ff015), FFEX (ff549)  
 Lyapunov fractals: Ftp from: ftp://ftp.luth.se/pub/aminet/new/  
  [130.240.18.2].  
 Commercial packages: Fractal Pro 5.0, Scenery Animator 2.0, Vista  
  Professional, Fractuality (reviewed in April '93 Amiga User  
  International).  
 MathVISION 2.4. Generates Julia, Mandelbrot, and others. Includes  
  software for image processing, complex arithmetic, data display,  
  general equation evaluation. Available for $223 from Seven Seas  
  Software, Box 1451, Port Townsend WA 98368.  
  
Software for computing fractal dimension:  
 Fractal Dimension Calculator is a Macintosh program which uses the box-  
  counting method to compute the fractal dimension of planar graphical  
  objects. Ftp from:  
  ftp://wuarchive.wustl.edu/edu/math/mac/fractals/ or  
  ftp://wuarchive.wustl.edu/packages/architec/Fractals/ .  
 FD3: estimates capacity, information, and correlation dimension from a  
  list of points. It computes log cell sizes, counts, log counts, log  
  of Shannon statistics based on counts, log of correlations based on  
  counts, two-point estimates of the dimensions at all scales examined,  
  and over-all least-square estimates of the dimensions. Ftp from:  
  ftp://lyapunov.ucsd.edu/pub/ [132.239.86.10]. Also look in  
  ftp://lyapunov.ucsd.edu/pub/ for an enhanced Grassberger-Procaccia  
  algorithm for correlation dimension. A MS-DOS version of FP3 is  
  available by request to gentry@altair.csustan.edu.  
  
Q22b: What are some supporting software/utilities?  
A22b: Some supporting software/utilities/sources are:  
  
http://akebono.stanford.edu/yahoo/Computers/Software/Graphics/ Yahoo  
at Stanford University  
  
http://garnet.acns.fsu.edu/~swingree/eimaging.html Electronic Imaging 
Software   
  
http://www2.ncsu.edu/bae/people/faculty/walker/hotlist/graphics.html   
Graphics viewers, editors, utilities and info   
  
file://ftp.switch.ch/mirror/msdos/zip PKzip (pkz204g)   
  
file://ftp.switch.ch/mirror/msdos/windows3 WinZip   
  
ftp://ftp.cadence.com/pictures/ Compression Utilities   
  
file://gatekeeper.dec.com/.f/micro/msdos/win3/desktop/ima.zip Image'n Bits  
  
http://www.cis.ohio-state.edu/hypertext/FAQ/usenet/jpeg-FAQ/FAQ.html  
JPEG FAQ   
  
file://gatekeeper.dec.com/.f/micro/msdos/win3/desktop/lview31.zip Lview  
  
http://www.cm.cf.ac.uk:80/Ray.Tracing/ Ray Tracing   
  
ftp://oak.oakland.edu/pub/msdos/   
VBRUN (vbrun100.zip, vbrun200,zip, vbrun300.zip)   
  
file://gatekeeper.dec.com/.f/micro/msdos/win3/desktop/wingif14.zip WinGIF  
  
file://gatekeeper.dec.com/.f/micro/msdos/win3/desktop/winjp265.zip WinJPEG  
  
http://hoohoo.ncsa.uiuc.edu/archie.html Archie Search   
  
http://www.fagg.uni-lj.si/cgi-bin/shase Shareware Search Engine