visual studio 2013:
https://my.visualstudio.com/Downloads?q=visual%20studio%202013&wt.mc_id=o~msft~vscom~older-downloads
visual studio 2015:
https://my.visualstudio.com/Downloads?q=visual%20studio%202015&wt.mc_id=o~msft~vsc
https://my.visualstudio.com/Downloads?q=visual%20studio%202013&wt.mc_id=o~msft~vscom~older-downloads
https://my.visualstudio.com/Downloads?q=visual%20studio%202015&wt.mc_id=o~msft~vsc