Hi all, I'm building a new package for DDE connections on R. It's called rdde and lives in https://bitbucket.org/juancentro/rdde. It's in alpha stage, but operational. It has a very simple vignette which explains the main reason you should try rdde vs tcltk2 (the only other option available) : performance. rdde allows the user to reuse connections (conversations). Establishing a conversation is the most expensive operation in DDE. Hope someone finds it useful Regards [[alternative HTML version deleted]]