A new report by TechNavio forecasts that ".. the Global DPI market will grow at a CAGR of 36.45 percent over the period 2013-2018 .. Although at present the EMEA region is a major contributor to the market, the APAC region is expected to emerge as a strong contributor to this market. ISPs and government organizations are the biggest adopters of DPI technology in the market .. with the increase in the use of bandwidth-intense applications such as P2P traffic and real-time multimedia content over the last few years, ISPs are increasingly adopting DPI solutions to manage and monitor the network".
The report identifies Allot Communications, Cisco, Procera Networks and Sandvine as "key vendors" and Arbor Networks, Bivio Networks, Endace, Huawei Technologies, ipoque, Quosmos and Tableau Software as "Other Prominent Vendors" (although some are no longer players in the DPI/traffic management market).
A year ago TechNavio had a similar forecast (see "[TechNavio] DPI Market to Grow at 35% 2012-16" - here).
See "Global DPI Market 2014-2018" - here.