Wasn't this called Yahoo Pipes in 2008?
Also https://github.com/node-red/node-red , comes ootb on Raspbian.
Another popular option is: https://zapier.com/
Is there anything that both has an android client and is open source?
The Fr8 Company is at http://www.fr8.co. They're going to make a bunch of their code available as open source shortly.
more alternatives:
* https://github.com/pjf/exobrain
* https://github.com/cantino/huginn/
* https://github.com/bipio-server/bipio
* https://github.com/ottawaruby/whenbot