From: On multi-language software development, cross-language links and accompanying tools: a survey of professional software developers
GPL/DSL
Java/XML
Java/SQL
JS/HTML
Java/HTML
Java/.prop
44
38
33
32
31
GPL/GPL
Java/JS
Java/Scala
Java/Groovy
Java/C
Java/Py
27
5
4
3
DSL/DSL
HTML/CSS
XML/.prop
HTML/.prop.
HTML/XML
XML/SQL
39
9