The license has been criticized as not being truly "Open Source" or "free". https://en.wikipedia.org/wiki/TrueCrypt#Licensing_and_Open_Source_status https://en

The license has been criticized as not being truly "Open Source" or "free". https://en.wikipedia.org/wiki/TrueCrypt#Licensing_and_Open_Source_status https://en.wikipedia.org/wiki/TrueCrypt#Licensing_and_Open_S... Wikipedia lists it as "source-available".