Feb 2021 update 
http://wwwad.ddlab.org/download/ddlab_compiled_2021/ and mirror sites
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The following files (.tar.gz) contain the mac 64bit executable
and GNU GENERAL PUBLIC LICENSE

ddlabz08_iMac_macOSSierra.tar.gz (iMac macOSSierra 10.12.6)
ddlabz08_MacPro_SnowLeopard.tar.gz (MacBook for SnowLeopard Mac OSX 10.6)

(other mac compiles are available for previous ddlab versions, includin 32bit)

Run DDLab from a terminal in X11, which must be installed.
From the directory with the DDLab files, enter the name of the
executable (renamed ddlabz08) preceded by ./ and followed by &, for example ...
 
./ddlabz08 &

Alternatively, first change directory to "ddfiles"
then enter the name of the executable preceded by ../ and followed by &

../ddlabz08 &

This will keep files generated by DDLab in the ddfiles subdirectory.

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Note on missing hash "#" from some mac keyboards:
"#" is used for some on-the-fly options, for example, to toggle scrolling
space-time patterns. If "#" is missing as in "MacBook Retina 2016",
it can be made with alt(option)3, the alt or option key and key 3.
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You can recompile DDLab yourself from the source code using
various mac Makefiles provided, available at
http://www.ddlab.org/download/ddlab_code_2021/
or previous releases and mirror sites.
DDLab would appreciate news of alternative compiles.
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