There are 5 independent companies developing their own versions of the lightning network. First one( Dryja’s Lightning Network) is expected this summer.

https://bitcoinmagazine.com/articles/greg-maxwell-lightning-network-better-than-sidechains-for-scaling-bitcoin-1461077424


EDIT-
P.S... As quick as you buttcoiners can create new shill newbie accounts I can ignore them. At least Jorge Stolfi has something slightly technical/valid to discuss (with a few misguided and ignorant statements thrown in --   "secured by a network with 1.5 PH/s
of mining power" .... LOL, really? Have you been asleep for the last 3 years Stolfi? We are in the  Exa Hash/s Era if you haven't been paying attention)

Troll Harder and try buying/developing some shill accounts that are outside of newbie status to make it more subtle newbie buttcoiners.