Initial release: 1987; 
Macaulay2
Initial release: 1993  
Sagemath 
 Initial release: 24 February 2005 
 MATLAB
 First appeared:  late 1970s
MATHEMATIC 
 Initial release:  June 23, 1988; 
 Initial release:  June 23, 1988; 34 years ago
  Available in: English, Chinese, Japanese
 Website: www.wolfram.com/mathematica