Intrusion Detection and Prevention Software
Alternatives to CrowdSec
CrowdSec combines local analysis of logs and requests with blocking for malicious IPs. Its Security Engine detects behavior and attacks without sending logs away, while the Remediation Component applies blocks across platforms. The AppSec Component adds web-application firewall protection, and the free Community offering includes decision management, audit support, selected AWS and Kubernetes scenarios, and integrations such as Cloudflare, Docker, WordPress, and Windows Firewall. IP Reputation adds contextual, time-lined intelligence. The Security Engine is free, while IP Reputation API access costs $49 a month and other commercial options cost more or have no listed price.
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OPNsense Community Edition may suit users seeking a self-hosted firewall and routing platform on x86-64.
Free plan Open source Web · iOS · Android · API9.1 Visit Specs - 02
IPFire IPFire suits individuals, businesses, and organizations that need a self-hosted firewall for networks ranging from home offices to larger deployments.
From $91.58/mo Free plan Open source Web · Linux · API · Self-hosted9.0 Visit Specs - 03
OSSEC OSSEC suits teams that need host and network-component monitoring across multiple operating systems, including log, file-integrity, and policy checks.
From $4.58/mo Free plan Open source Windows · macOS · Linux · API9.0 Visit Specs - 04 Arista NG Firewall
NG Firewall suits organizations seeking network security and management capabilities across hybrid deployments.
From $22.50/mo Free plan Web8.9 Visit Specs - 05 Wazuh
Wazuh may suit individuals and organizations of different sizes seeking endpoint, cloud, and network security monitoring.
From $571/mo Free plan Open source Web · Windows · macOS · Linux8.6 Visit Specs - 06 Barracuda CloudGen Firewall Free trial Web · Windows · macOS · Linux8.3 Visit Specs
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SELKS SELKS may suit small-to-medium organizations, as well as practitioners, researchers, educators, students, and hobbyists exploring Suricata.
Free plan Open source Web · Windows · Linux · Self-hosted8.3 Visit Specs - 08 Atomic OSSEC
It suits organizations managing security and compliance across cloud and datacenter environments, including those with legacy systems or operational technology.
Free trial Web · Windows · macOS · Linux8.2 Visit Specs - 09 pfSense
pfSense may suit home and remote workers, businesses, government, education, and service providers.
Free plan Web · Linux · Self-hosted8.1 Visit Specs - 10
AWS Network Firewall From $0.07/mo Web · API7.9 Visit Specs - 11
FortiGate Free trial Self-hosted7.8 Visit Specs - 12 Cisco Catalyst Center Web · Windows · macOS · Linux7.7 Visit Specs
- 13 Clear NDR - Enterprise Web · Linux · API · Self-hosted7.7 Visit Specs
- 14 Snort From $2.50/mo Free plan Linux · Self-hosted7.7 Visit Specs
- 15 RdpGuard From $4.16/mo Free trial Windows7.6 Visit Specs
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Suricata Suricata suits home, corporate, and government users, as well as developers, researchers, and third-party tooling developers who need network detection or monitoring.
Free plan Windows · macOS · Linux7.6 Visit Specs - 17
Forcepoint Next Generation Firewall It is aimed at large enterprises, campus networks, data centers, offices, branches, remote sites, and stores.
Windows · macOS · Linux · Android7.5 Visit Specs - 18 Sophos Central Firewall Management Free trial Web · API · Self-hosted7.5 Visit Specs
- 19 Stormshield Management Center
SMC suits organizations managing multi-site networks built around SNS firewalls, particularly teams that need centralized policy, VPN, firewall, or SD-WAN administration.
Free trial Web · Linux · API · Self-hosted7.5 Visit Specs - 20
Azure Firewall Premium Web · API7.4 Visit Specs - 21
FortiGuard DNS Filtering Service 7.4 Visit Specs - 22 scanlogd
It suits Linux or self-hosted users who need TCP port-scan detection and packet-capture choices.
Free plan Linux · Self-hosted7.4 Visit Specs - 23 Juniper Security Director
It suits organizations managing Juniper SRX environments across on-premises, cloud, or hybrid infrastructure.
Web · Self-hosted7.3 Visit Specs - 24 Securepoint RC1000R G6 Web · Windows · iOS · Android7.3 Visit Specs
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Oracle Cloud Infrastructure DNS Web · Linux · API7.2 Visit Specs - 26 Huawei HiSecEngine USG6800G
It suits organizations seeking centralized network security for branches, campuses, or data centers.
Web7.1 Visit Specs - 27 Zyxel Intrusion Prevention System 6.5 Visit Specs
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Palo Alto Networks Advanced Threat Prevention From $0.01/mo6.4 Visit Specs - 29 AhnLab AIPS Web6.2 Visit Specs
- 30 Check Point Intrusion Prevention System (IPS)Check Point Software Technologies Ltd. Self-hosted6.0 Visit Specs
Choosing instead of CrowdSec
Alternatives suit readers who need a different security center of gravity: endpoint and cloud analytics, host intrusion detection, routing and firewall controls, private application access, managed remote-user protection, or packet-focused monitoring. Compare each product’s platforms, deployment model, response actions, and cost. Also check whether free software is actively developed, whether a trial is available, and whether its scope matches your environment. A narrower tool may fit one role better, but may not combine CrowdSec’s behavior analysis, IP reputation, application protection, and remediation.