This isn't distributed, but it might be considered (arguably) vaguely relevant: <a href="https://en.wikipedia.org/wiki/Multipath_TCP" rel="nofollow">https://en.wikipedia.org/wiki/Multipath_TCP</a><p>MPTCP splits a TCP virtual circuit (connection) up into multiple paths so that the underlying packets can travel via more than one route to their final destination.<p>It's a very, very new protocol; Linux contains the official reference implementation (which Android gets too), and independent implementations can be found in FreeBSD, F5 Networks' BIG-IP, and Citrix Netscaler.<p>However, Apple's introduction of MPTCP in iOS 7 is the most interesting: the OS actively uses the technology to talk to various Apple-controlled services. <a href="http://perso.uclouvain.be/olivier.bonaventure/blog/html/2013/09/18/mptcp.html" rel="nofollow">http://perso.uclouvain.be/olivier.bonaventure/blog/html/2013...</a><p>As such, it's currently the biggest commercial implementation of MPTCP out there at the moment.