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Best Intrusion Detection and Prevention Software in 2026
Intrusion detection and prevention tools help you monitor activity across systems and networks, and some can block threats inline. Compared on network scope, cloud workload support, deployment model, and supported platforms, they offer different ways to match coverage to your environment. Check whether encrypted traffic inspection and threat intelligence matter for your needs, then consider free-plan availability and the listed paid-from price. CrowdSec, Wazuh, and OSSEC are among the options shown, alongside tools such as SELKS and Suricata. Compare the stated capabilities with the traffic and workloads you need to protect.
- 39 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
- 2
IPFire
Free plan Open source APILinuxSelf-hosted+1IPFire brings firewalling, VPN, intrusion prevention, and proxy functions together in a free, open-source platform.
- 3
- 4
OSSEC
Free plan Open source APILinuxMac+2OSSEC covers log, file-integrity and rootkit monitoring, with alerting and active response options. The core editions are command-line managed; a console is listed for Atomic OSSEC editions.
- 5
SELKS
Free plan Open source LinuxSelf-hostedWeb+1SELKS provides network detection, monitoring and hunting functions with several deployment options.
- 6
Wazuh
Free plan Open source APILinuxMac+3Wazuh combines security monitoring with response capabilities and integrations for a range of environments.
- 7
Arista NG Firewall
by Arista NG FirewallFree plan WebArista NG Firewall offers a free tier and a broader Complete package for network visibility and appliance management.
- 8
- 9
scanlogd
Free plan LinuxSelf-hostedscanlogd is a focused TCP port scan detection tool with several packet-capture options and distribution listings.
- 10
Suricata
Free plan LinuxMacWindowsSuricata offers network detection, prevention and monitoring capabilities, with JSON output for integrations and support for several operating systems.
- 11
Snort
Free plan LinuxSelf-hostedSnort offers several traffic-monitoring modes, rule-based detection, and optional inline packet blocking. The free Community Ruleset is updated daily; paid rules and support are licensed per sensor.
- 12
Atomic OSSEC
Free trial LinuxMacSelf-hosted+2Atomic OSSEC combines endpoint monitoring, cloud workload protection, compliance reporting, and centralized administration.
- 13
Cisco Catalyst Center
Paid APILinuxMac+3 - 14
Stormshield Management Center
Free trial APILinuxSelf-hosted+1Choose SMC if your organization needs centralized administration for multi-site networks built around SNS firewalls.
- 15
Clear NDR - Enterprise
Paid APILinuxSelf-hosted+1Clear NDR - Enterprise combines network telemetry, threat detection, and investigation tools with deployment options that include air-gapped environments.
- 16
Forcepoint Next Generation Firewall
by Forcepoint Next Generation FirewallPaid AndroidAPILinux+3Consider Forcepoint Next Generation Firewall if you need its listed intrusion prevention, SSL inspection, policy controls, API access or site-to-site VPN in a hybrid deployment.
- 17
Sophos Central Firewall Management
by Sophos Central Firewall ManagementFree trial APISelf-hostedWebSophos Central Firewall Management combines cloud administration with broad firewall deployment choices and threat-response features.
- 18
AWS Network Firewall
Paid APIWebAWS Network Firewall offers traffic inspection and controls integrated with other AWS services, with costs based on endpoint time and processed data.
- 19
Azure Firewall Premium
Paid APIWebAzure Firewall Premium combines network filtering with TLS inspection, intrusion prevention, and several management and logging options.
5.7 Visit site - 20
- 21
Oracle Cloud Infrastructure DNS
Paid APILinuxWebOCI DNS provides zone management, traffic steering, and multiple administration interfaces, with defined account and capacity limits.
- 22
RdpGuard
Free trial WindowsRdpGuard combines host-level blocking with shared reports and country controls across many Windows services. Check its single-server limitation and renewal terms when planning a deployment.
- 23
Securepoint RC1000R G6
Paid AndroidiPhoneWeb+1The RC1000R G6 provides consolidated network security functions, high stated throughput, expandable connectivity, and resilient power hardware.
- 24
Juniper Security Director
by Juniper Security DirectorPaid Self-hostedWebChoose Juniper Security Director if your organization manages Juniper SRX security policies across on-premises and cloud environments and needs centralized policy analysis.
- 25
Huawei HiSecEngine USG6800G
Paid WebThe series combines application control, threat defenses and centralized policy management in an appliance. Buyers will need to request pricing from Huawei.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
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