Does there exist any software in (Tex\LaTex...) family that is not open source?
Do there exists any software in these branches which is not open source?

closed as too broad by Stefan Pinnow, David Carlisle, Troy, Andrew, ChrisS Sep 24 '17 at 11:42

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    All code in TeXlive is open source if that is what you're asking. Apart from being a duplicate it is pretty unclear. – Henri Menke Sep 24 '17 at 7:22
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    There have been a number of commercial or shareware TeX distributions, for example BaKoMa, plus a range of simple text editors with non-open licenses. I'm not sure what exactly is wanted here in an answer. – Joseph Wright Sep 24 '17 at 7:35
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    There's also Scientific Workplace, which is definitely not free. – Mico Sep 24 '17 at 7:47
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    I've cleaned up comments here to reflect the nature of the question after editing – Joseph Wright Sep 24 '17 at 9:44

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