Now at last, we have CAD+LISP all for free, and it's not some joke. lsp files nor write your custom commands/functions.Īfter that, some alternative CAD software came out on the market and they started to offer LISP support but not for free. Many users that bought it not even noticed that LT is not LISP enabled. lsp files became standard for CAD customization.įew years ago AutoCAD released it's first 'lite' version of AutoCAD named AutoCAD LT. Users from all over the world wrote millions of LISP routines and. More then twenty years, AutoCAD was the only CAD platform enabling customization with LISP programming. Mostly interfacing CAD objects and input/output functions.īabaCAD - World's first LISP enabled freeware CAD

They called it AutoLISP as it has LISP base upgraded with some CAD specific functions, LISP (from wikipedia) is the second-oldest high-level programming language in widespread use today (Originally specified in 1958) only Fortran is older (by one year).Īutodesk, the creators of the world's leading CAD software AutoCAD, included the LISP programming as customization option since it's release 2.1 in the year 1986.