Know this is a welding newsgroup, but anyway, remember that now you have an AppleMac with OS-X operating system you now have access to loads of Unix utilities and programs from the Free Software movement. All put together by a bunch of hippies into a "packages" distribution system at
Drawing tools Graph plotting Programming languages Typesetters The mighty "emacs" text processor and handler of all things text-based Database programs Wordprocessors and "office applications" if you are into that sort of stuff!
Just install the downloader then click on what you want and it downloads and installs, no further intervention.
Puts in all in a directory, /sw, down in the file system root so it doesn't interact or depend on anything else on the system. Longstop assurance - if you were to delete that directory and all its tree of contents there would be no "fink" unix presence anywhere on the computer. Not as you'd want to...
My stainless steel / TIG work - all the blank shapes, template shapes (cut with a jig-saw from MDF board) and the jigs (plasma-cut and "precision angle-ground" from steel plate) were calculated using a program written in Lisp and run on the "clisp" ANSI Common Lips interpretter I grabbed from "Fink".
If you see the "curvaceous vase", first picture in
shape was decided on playing around with "gnuplot" the graph-plotting program, also grabbed from "Fink". I put in various mathematical equations until I saw a shape that was pleasing. And that became the shape of the vase.