Atomic OSSEC vs OPNsense
Atomic OSSEC
atomicorp.com
OPNsense
opnsense.orgSide by side
| Figure | Atomic OSSEC | OPNsense |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 6 |
| Spec score · Intrusion Detection and Prevention Software | 8.2 (#8) | 9.1 (#2) |
| Authentication | The comparison lists two-factor authentication and hardware security key integration with YubiKey and Google Titan, plus SSO integrations including Google and Microsoft. | The product documents one-time-password authentication and supports LDAP, Active Directory, RADIUS, captive portal authentication, and 802.1X through plugins. |
| Headquarters | Chantilly, Virginia, United States | Middelharnis, the Netherlands |
| Support | The maker describes ticket-based support from a small expert team and advertises expert support with its SaaS offering. | Commercial support offers network-design advice, issue solving, and custom development for an annual fee. |
Plans
OPNsense
- Business EditionPrice not published
- Business Edition 3YrPrice not published
- Community EditionFree
- OPNsense Business Edition 1yr subscription€149 a year
- OPNsense Business Edition (3Yr)€399, paid once
- OPNsense Business Edition 3Yr€399 a year
In their own words
Atomic OSSEC
Atomic OSSEC is an endpoint detection and response system that also protects cloud workloads and APIs. Its monitoring covers intrusion detection, file integrity, log management, active response, and vulnerability management. A GUI centralizes management of agents, servers, events, file integrity monitoring, rollbacks, and third-party integrations. The product lists more than 5,000 preconfigured OSSEC rules and out-of-the-box integrations for Splunk, ArcSight, ELK, and QRadar. It supports AWS, Azure, and GCP, and offers compliance reporting for frameworks including PCI DSS, HIPAA, NIST, GDPR, and CIS. Deployment can be on premises or cloud-based SaaS, including in air-gapped environments. The maker also describes support for legacy systems such as Windows, Linux, AIX, HP-UX, and Solaris, plus monitoring of operational technology without agents on sensitive equipment. A 14-day trial covers up to 10 licenses and does not require a credit card. The listed plan price is priced on request, pricing starts at $55 per agent, and bulk discounts are available; a separate pricing note says from $5/mo.
OPNsense
OPNsense is an open-source firewall and routing platform based on FreeBSD, available for self-hosted, web, and API use. Its stateful firewall supports IPv4 and IPv6 and provides live views of passed and blocked traffic. VPN integrations include IPsec, OpenVPN, Tinc, and WireGuard. CARP supports automatic hardware failover with state synchronization, and inline intrusion prevention uses Suricata with Proofpoint Emerging Threats Open rules. The modular Model View Controller framework supports extensions and API functionality. Authentication options include LDAP, Active Directory, RADIUS, captive portal authentication, and 802.1X through a plugin. Community Edition is free at free under the 2-clause BSD license, and installation is limited to x86-64 architecture. Official setup guides cover AWS images, OVA images, and an Azure Virtual Appliance. Business subscriptions add commercial features and support; listed prices are €149 a year or €399 a year for three years. The project began in 2014 as a fork of pfSense and m0n0wall, with its first official release in January 2015.