https://www.ctan.org/recommendations/ltx2x
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https://ctan.org/pkg/ltx2x?lang=de
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https://ftp2.ru.freebsd.org/pub/CTAN/support/ltx2x/
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https://www.ctan.org/tex-archive/support/ltx2x
CTAN: /tex-archive/support/ltx2x
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https://ctan.math.utah.edu/tex-archive/support/ltx2x/?C=M;O=D
Index of /tex-archive/support/ltx2x
index oftexarchivesupport