JavaScript (Computer program language) 14 HTML (Document markup language) 7 Internet programming 7 R (Computer program language) 7 Python (Computer program language) 6 Web site development 6 Cascading style sheets 5 Java 4 Scripting languages (Computer science) 4 Web sites 4 Computer science 3 Data processing 3 Geographic information systems 3 Information storage and retrieval systems 3 Java (Computer program language) 3 PHP (Computer program language) 3 Programming languages 3 Spatial analysis (Statistics) 3 Statistics 3 ActionScript (Computer program language) 2 Ajax (Web site development technology) 2 Application software 2 COMPUTERS 2 Computer algorithms 2 Computer animation 2 Computer graphics 2 Computer simulation 2 C♯ 2 Design 2 Document markup languages 2