RoboFog was a version of Fontographer 3.5 with an embedded Python interpreter, developed by Just van Rossum, Petr van Blokland and Erik van Blokland.
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Fontographer, developed by von Ehr for the Mac and released in January 1986 —before Adobe Illustrator— was the first commercially available Bézier curve editing software for a personal computer.
Altsys was known for developing Fontographer, a PostScript-based font editor, and later FreeHand, a powerful PostScript-based illustration program for graphics artists and designers.