Allot Communications is a provider of security and monetization products based in Hod HaSharon, Israel. Allot solutions use Deep Packet Inspection (DPI) technology to change broadband pipes into smart networks offering complete network visibility, application control and subscriber management. In 2015, the company reported $100.3 million in revenue.

Allot Communications was founded in 1996, by Michael Shurman and Yigal Jacoby, who served as chief executive and chairman until 2006. Jacoby previously founded Armon Networking, a manufacturer of RMON-based network management solutions, which was sold to Bay Networks for $33 million in 1996.

In November 2003, Deloitte & Touche named Allot the fourth fastest-growing company on its Israel Technology Fast 50 list, citing the company's revenue growth of nearly 1,900% in a year's time.

By 2004, Allot raised $38 million in several rounds of funding from several venture capital funds, including: Genesis Partners, Gemini, Walden Israel, JAFCO Investment, BancBoston Capital, Jerusalem Venture Partners, and Tamar Technology Ventures.

In 2006, Rami Hadar was appointed President and CEO. In November 2006, Allot became a publicly traded company on the Nasdaq Global Market under the ticker symbol ALLT. The IPO raised $78 million. In November 2010, Allot's dual listing on the Tel Aviv Stock Exchange was approved.

Allot partnered with Openet in January 2011 to optimize monetization of mobile broadband networks. Allot was featured on the Deloitte Fast 50 list in 2014 for a 131% growth between 2009 and 2013. Allot joined the HP OpenNFV Partner Program in July 2015, allowing it to expand its Traffic Detection Function and security services onto the HP OpenNFV platform.

Nokia Networks partnered with Allot Communications in January 2016 to enhance visibility, control and security for Swisscom. Later that year, Allot partnered with Intel Security to release McAfee Unified Security Powered by Allot which focused on end-to-end security capabilities.

In September 2002, Allot acquired NetReality, a provider of network application priority switches (NAPS), in order to enhance its quality of service (QoS) and bandwidth management solutions. Allot acquired Esphion, a New Zealand–based developer of network protection solutions for carriers and Internet service providers, in January 2008. The acquisition expanded Allot's mitigation of security threats with the addition of isolation and remedy of infected subscribers and Distributed Denial of Service (DDos) attack prevention. In May 2012, Allot acquired Ortiva Wireless, a San Diego-based developer of video traffic optimization equipment. Allot acquired Oversi Networks, a provider of rich-media caching and content delivery solutions for Internet video and peer-to-peer (P2P) traffic, in July 2012. In March 2015, Allot acquired global IT security company Optenet which expanded the company's security-as-a-service offerings.

Allot provides intelligent IP service optimization solutions for DSL, wireless broadband carriers, service providers, and enterprises. Allot's portfolio of hardware platforms and software applications employs DPI to turn broadband pipes into smart networks, so that value-added Internet services can be rapidly deployed. Allot SG-Sigma, released in 2009, was designed to increase subscriber Quality of Experience (QoE) with the ability to generate additional revenue streams.

In 2014, Allot released the Allot Service Gateway Tera as a unified framework for physical and virtual deployment across access networks. In December 2014, Allot unveiled Allot Cloud Access Optimization, designed for enterprises and cloud managed service providers, which has three levels of coverage and can be used with Office 365 and adds visibility, control and security to applications.

Allot SmartEngage, designed to enhance company engagement with subscribers, was launched in February 2015. SmartEngage uses Allot Service Gateway's traffic awareness feature to suggest content based on browsing activity.

In May 2015, Vodafone Germany announced its deployment of Allot WebSafe Personal, a network-based Security-as-a-Service offering designed for mobile users as well as small and medium business clients, which includes anti-malware and parental control options. Later that same year, Allot released the Allot Service Gateway-Virtual Edition (Allot SG-VE). The original Service Gateway was introduced in 2007 to improve efficiency and monetization options for companies. The new framework integrates the Gateway framework with a virtual network to remove physical hardware constraints. In February 2016, Allot released the Allot Service Gateway 9500, expanding its capabilities to include enterprises, data centers, and service providers. In June 2016, Belgian cable company announced that it began using Allot Service Gateway Tera and Allot ServiceProtector for network traffic analysis along with Allot's CMTS to manage congestion and QoS assurance.

In 2011, reports alleged that Allot had been illegally selling equipment to Iran. However, in January 2012 Allot was cleared by the Ministry of Defense of any wrongdoing. Also in 2011, Allot settled a class-action lawsuit regarding securities fraud involving its stock whereby it agreed to pay $1.3 million (USD).