Head-to-head · Intrusion Detection and Prevention Software
Atomic OSSEC vs OSSEC
Atomic OSSEC leads on 0 checks, OSSEC on 1, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreAtomic OSSEC · 6.2/10
- Free planonly OSSEC
- Free trialboth
Atomic OSSEC scores higher on our rubric for intrusion detection and prevention software: 6.2 against 6.1 out of 10; our editors rank them #25 and #26.
OSSEC offers free plan; Atomic OSSEC doesn't.
Atomic OSSEC is the better fit for low-cost host and cloud intrusion detection. OSSEC is the better fit for free host intrusion detection and monitoring.
- Atomic OSSEC fits best
Low-cost host and cloud intrusion detection
- OSSEC fits best
Free host intrusion detection and monitoring
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Side by side
| Feature | Atomic OSSEC 6.2/10 Visit ↗ | OSSEC 6.1/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 6.2 | 6.1 |
| Ranking | #25 in Intrusion Detection and Prevention Software | #26 in Intrusion Detection and Prevention Software |
| Best for | Low-cost host and cloud intrusion detection | Free host intrusion detection and monitoring |
| Pricing model | Paid | Free plan + paid |
| Starting price | $55/device/yr | — |
| Free plan | — | ✓ (best) |
| Free trial | 14 days | 14 days |
| Free trial length | 14 days · no card needed | 14 days · no card needed |
| Deployment | Cloud, Self-hosted | Cloud, Self-hosted |
| Platforms | Web, Windows, macOS, Linux | Windows, macOS, Linux |
| Support | Tickets, Docs | Community, Docs · 24/7 |
| Compliance | GDPR, HIPAA, PCI DSS, 2FA | PCI DSS, HIPAA, GDPR |
| Integrations | 400+ integrations | 8 integrations |
| Built for | Mid-market, Enterprise | Solo, Small business, Mid-market, Enterprise |
| Features Atomic OSSEC 2/4 · OSSEC 2/4 | ||
| Inline blocking | Not checked yet | Not checked yet |
| Encrypted traffic inspection | Not checked yet | Not checked yet |
| Cloud workload support | ✓ | ✓ |
| Threat intelligence | ✓ | ✓ |
| Specs | ||
| Deployment model | Hybrid | Hybrid |
| Network scope | Multi-scope | Multi-scope |
| Supported platforms | Not checked yet | Cloud |
| Our review | ||
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| Our verdict | Atomic OSSEC is a commercial extension of OSSEC for endpoint detection and response, host intrusion detection, file integrity monitoring, log management, vulnerability scanning, compliance reporting, malware protection, and active… Read the review → |
OSSEC is an open-source host-based intrusion detection system for individuals, developers, security teams, and organizations. It analyzes logs, monitors file and Windows registry changes, detects rootkits, generates configurable alerts,… Read the review → |
Strengths and trade-offs
Atomic OSSEC — where it wins
- File integrity monitoring, CVE scanning, and compliance reporting
- Active response with centralized agent and rule management
- Integrations across major clouds, SIEMs, and workflow tools
Where it doesn't
- Focuses on host and endpoint security rather than inline network IPS
- No free plan is offered
- Pricing may require a quote despite published per-server rates
OSSEC — where it wins
- Free open-source host monitoring with file integrity and rootkit detection
- Active response, centralized policies, and configurable real-time alerts
- Supports Windows, macOS, Linux, cloud services, and network-device syslog
Where it doesn't
- The free OSSEC plan includes a basic out-of-the-box ruleset
- Professional support and vulnerability scanning require Atomic OSSEC
- It is host-focused rather than verified inline network blocking
- Atomic OSSEC6.2/10 · 14-day trial
A low-cost host security suite with cloud protection, compliance, and active response.
Visit Atomic OSSECFull verdict → - OSSEC6.1/10 · Free plan · 14-day trial
A flexible free HIDS with broad monitoring, plus paid rules, scanning, and support.
Visit OSSECFull verdict →
All intrusion detection and prevention software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update