[aplusdev] Non-GPL A+?

[Alexander Skomorokhov]

Dan,
  Is A+ available under a parallel, non-GPL commercial license
  that would allow it to be used/embedded in non-open source
  products? Perhaps something similar to MySQL's commercial 
  license? 

  I am not a licensing expert:-( But if nobody else answer this question
  then I'd like to say how I understand the situation.

  GPL license is about A+ itself. If you take A+ source code and modify
  something there then this modification must be published under GPL.
  But if you use A+ as a programming language (and a platform to 
  develop your applications) then these programs and applications
  may be proprietary. And you may use GPLed A+ in combination 
   with some proprietary products, let say MatLab. 

  As integrators of custom trading solutions, we cannot use
  GPL licensed software because of potential license conflicts
  with other software packages we integrate in our systems. 
  Let say I develop "close" source commercial system using commercial
  version of Dyalog APL. Most code is in APL, but I use MySQL as a 
  database engine (and communicate to APL via ODBC) and use R to
  perform some statistic calculations. In my (solid:-) understanding
  until I do not touch source code of MySQL and R (just use them as is) 
  I am in good shape. And my commercial code written in Dyalog APL
   remains close and protected. 

  Conversely, can anyone point me to other APL implementations
  for which the source code might be available under a non-GPL 
  license?

                                                                 
  The only _serious_ APL implementation with open source is A+.
  And it's the great historical role and importance and perspective of A+

  Regards,
  Sasha. 
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