Interfacing R

OpenCPU - HTTP API for R
https://www.opencpu.org/

• Stateless
• rApache, Nginx, Ubuntu

RApache
http://rapache.net/

RServe - Sockets 
https://rforge.net/Rserve/

R language from Java
https://github.com/jbytecode/rcaller
http://www.rforge.net/JRI/
http://www.renjin.org/
https://bitbucket.org/allr/fastr (http://www.oracle.com/technetwork/java/jvmls2013vitek-2013524.pdf)