PRX-SD
PRX-SD: A technical, cross-platform malware detection engine with open-source flexibility. Ranked #103 of 117 in Antivirus Software by our editors (3.0/10); pricing: Free plan; best for technical users wanting open-source cross-platform scanning.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forTechnical users wanting open-source cross-platform scanning
- Free planYes
- Paid fromFree
- Protection scopeComplete security
- Facts checked22 Sep 2026
Where it wins
- Combines signatures, YARA rules, heuristics, and optional machine learning
- Adds real-time monitoring, ransomware blocking, and network filtering
- Supports Linux, macOS, and Windows with CLI and desktop GUI
Where it doesn't
- Self-hosted operation is better suited to technical users than casual buyers
- Focuses on malware detection rather than broader consumer-suite extras
- No conventional paid tiers are part of its open-source distribution model
Our verdict on PRX-SD
PRX-SD is an open-source antivirus engine for users and developers who need self-hosted malware detection across Linux, macOS, and Windows. Its detection layer combines SHA-256 and MD5 hash signature matching, YARA rule scanning, heuristic threat analysis, and optional ONNX-based machine-learning inference. Access is available through both a command-line interface and a desktop GUI, giving technical users flexibility in how they scan files and directories.
Protection extends beyond on-demand scanning. PRX-SD provides real-time file-system monitoring, ransomware detection with process blocking, and an encrypted threat quarantine vault. Network protection adds IP, domain, URL, and DNS filtering, while ClamAV signature database import and VirusTotal integration broaden its ecosystem connections. This combination makes the product a strong fit for users who want configurable detection methods and multiple control surfaces rather than a narrowly scoped scanner.
The open-source model is central to PRX-SD’s appeal. The project is distributed under MIT or Apache-2.0 licensing, with no conventional paid-tier structure described. That makes it a practical choice for technical users and developers who prefer a self-hosted engine and want to inspect or adapt an open-source project. It is less suitable for buyers seeking a packaged consumer suite with a wider set of extras or a simpler, service-led experience. Choose PRX-SD for cross-platform scanning, layered detection, and operational control; choose an alternative if ease of use and broader consumer coverage matter more.
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PRX-SD pricing
PRX-SD fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Protection scope | Complete security |
| Device limit | Not verified |
| Supported platforms | Linux, macOS, Windows |
| Ransomware protection | Yes |
| Parental controls | Not verified |
| Password manager | Not verified |
| Deployment | Self-hosted, Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 3 integrations: ClamAV, VirusTotal, WebAssembly plugins |
| Pricing | Free plan |
| Website | openprx.dev |
| Facts checked | 22 Sep 2026 |
PRX-SD integrations
PRX-SD lists 3 integrations on its own site.
- ClamAV
- VirusTotal
- WebAssembly plugins
Alternatives to PRX-SD
- Microsoft Defender for BusinessA focused endpoint security subscription with EDR and centralized controls for small businesses.9.4
- Bitdefender GravityZone Small Business SecurityA paid endpoint security suite for small businesses needing layered protection and central control.9.3
- Bitdefender Total SecurityA broad security suite for families protecting PCs, Macs, phones, and tablets.9.2
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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