Download LINGO on Windows 64 x64 or Mac OSX 64-bit
and LINDO 6.1 on Windows 32x86

This software may be upgraded to a standard license at any time by ordering from our order page
or contacting LINDO Systems .
Please confirm your status below to continue.
I am a student or professor that owns a copy of the Wayne Winston textbook and I will be using the software for educational purposes only.