This is not only a list of programming languages, but a list of "technologies". To get only programming languages you have to filter on type=pl [1]. JSON is mar

This is not only a list of programming languages, but a list of "technologies". To get only programming languages you have to filter on type=pl [1]. JSON is marked with type=dataNotation [2] - so it is a "data notation" language... [1] https://pldb.com/lists/languages.html?filter=pl https://pldb.com/lists/languages.html?filter=pl [2] https://pldb.com/lists/languages.html?filter=dataNotation https://pldb.com/lists/languages.html?filter=dataNotation