Are there other companies offering or working on services like ifttt?
I am now categorizing consumer oriented services such as IFTTT, Yahoo! Pipes, Tarpipe, etc. together with iPaaS (integration PaaS), and would be happy to hear any arguments to the contrary. In this regard, I can recommend my recent Meta Guide survey of iPaaS [1] providers.
[1] http://www.meta-guide.com/home/ipaas-integration-paas