Best Corelight Zeek Alternatives & Competitors in 2026

Corelight Open NDR Platform

Network detection and response platform with IDS, NSM, and threat intel.

GQUIC Protocol Analyzer

A Zeek-based protocol analyzer that parses GQUIC traffic to extract connection metadata and create fingerprints for detecting anomalous network behavior.

Netis Cloud Probe

An open source packet capture and forwarding tool that captures network packets on one machine and sends them to another for remote monitoring and analysis.

Apache Spot (Incubating)

Apache Spot is an open source big data platform that analyzes network flows and packet data to identify security threats and provide visibility into enterprise computing environments.

Stamus Networks Clear NDR

Network detection and response platform for threat detection and analysis

Absolute Insights for Network

Digital experience monitoring for network, device, and app performance

ManageEngine NetFlow Analyzer

Flow-based network traffic monitoring and bandwidth analysis tool

Array NTB Series

Network traffic broker for visibility, monitoring, and traffic optimization

TEHTRIS NTA

Network traffic analysis tool for real-time intrusion detection and monitoring

Gatewatcher TAP Qualifié

Qualified network TAPs for traffic duplication and network monitoring

Stamus Clear NDR

Network Detection and Response system for threat detection and response

Viettel VCS-NSM

Real-time network security monitoring for threat detection using DPI and sandbox

Corelight Investigator

SaaS-based NDR platform for threat investigation and Tier 1 workflows

Gigamon TLS/SSL Decryption

TLS/SSL decryption for network traffic visibility and security analysis

NIKSUN FlowAggregator™

Flow-based network monitoring platform for performance and security visibility

Plixer One Security

Network visibility and security insights platform for IT environments

ScoutDNS Network Visibility

DNS-layer network visibility and monitoring with query logging and analytics

Nubeva SKI

TLS decryption solution that extracts session keys from memory for traffic inspection

cPacket Unified Observability Platform

Modular network observability platform for packet brokering, capture & analytics.

cPacket Network Observability Platform

Packet-based network observability platform for hybrid environments.

Cryptomage Cyber Eye™

Polish NDR appliance for network threat detection, forensics & GDPR compliance.

Cyberspatial Teleseer

Passive network intelligence platform for gov/defense with real-time visibility.

Genie Networks GenieATM FLB

Flow load balancer for distributing & filtering NetFlow records to collectors.

Kentik Network Security and Compliance

Network intelligence platform for detecting, and responding to security incidents

MetaFlows

Network security monitoring platform with IDS, PCAP capture, and asset discovery.

Repacket

Enterprise network monitoring via deep packet inspection & traffic classification.

Solana Networks SmartFlow

Flow-based network security monitoring tool using anomaly detection.

Trinity Cyber Full Content Inspection (FCI)

Network defense platform with real-time content inspection & threat blocking

Cynamics SOC-AI

Autonomous AI-powered NDR platform using a proprietary LLM for SOC automation.

Fox IO JA4+

Protocol-layer network fingerprinting suite for bot, proxy & malware detection.

EfficientIP SOLIDserver DDI

DDI platform with DNS security, DHCP, and IPAM for enterprise networks.

Cienaga Systems

AI-driven network security platform for MSPs serving SMBs.

Allentis Tapics Copper TAP

Passive copper TAP range for non-intrusive Ethernet traffic monitoring.

Garland Technology EdgeLens

Bypass TAP/packet broker hybrid for before-and-after inline tool traffic analysis.

Hyprfire Firebug

Managed NDR solution delivering network threat hunting via passive traffic metadata.

Exabeam NetMon

Network monitoring and detection solution for threat analysis

Arkime

Arkime is an open-source network capture and analysis tool that provides comprehensive network visibility, facilitating swift identification and resolution of security and network issues.

FirstWave opFlow

NetFlow/IPFIX traffic analyzer for network visibility and anomaly detection.

RITA (Real Intelligence Threat Analytics)

Open source framework for network traffic analysis with advanced features.

Passive Network Audit Framework (PNAF) v0.1.2

Passive Network Audit Framework (PNAF) v0.1.2 provides passive network auditing capabilities and is now a project of COSMIC-Chapter of The Honeynet Project.

RDFP

Zeek Remote desktop fingerprinting script for fingerprinting Remote Desktop clients.

PF_RING ZC (Zero Copy)

High-performance packet capture library with zero copy functionality.

Sniff

Makes output from the tcpdump program easier to read and parse.

Trend Micro Network Detection and Response

NDR solution providing network visibility, threat detection, and intrusion prevention

Gatewatcher Plateforme NDR

NDR platform for IT/OT environments with threat detection and CTI

Huawei SecoManager Security Controller

Security controller for policy mgmt, orchestration & log management

MixMode AI Cyber Defense

AI-powered threat detection platform using self-supervised learning for NDR

RedBorder Cybersecurity

NDR platform with NGIPS, NetFlow/sFlow analysis, SIEM, and correlation engine