Inet was an electronic trading platform based on a system developed by Instinet in the 1970s that merged with Island ECN in 2002 and was subsequently acquired by NASDAQ in 2005.
[1] Inet, like other electronic communication networks, was an order-pairing system that give brokerage firms the power to electronically track and match reciprocal buy and sell orders at the same limit price and lot size.
An efficient and reliable system that reduced costs to both brokerage firms and investors and facilitate high speed pairings of buy and sell orders.
Today the NASDAQ stock exchange system in New York is called "INET".
After NASDAQ's acquisition of the Swedish OMX exchange group in 2007, it gained access to OMXs trading platform Genium[3] it used this to create the next generation of Inet called the Genium Inet trading platform.