# FreeWave Zentry vs Gambit KnightGuard for OT & Critical Infra: side-by-side comparison (2026) [FreeWave Zentry](https://cybersectools.com/tools/freewave-zentry) is a commercial [industrial control system security](https://cybersectools.com/categories/ics-security) solution by [FreeWave Technologies](https://cybersectools.com/companies/freewave-technologies). [Gambit KnightGuard for OT & Critical Infra](https://cybersectools.com/tools/gambit-knightguard-for-ot-and-critical-infra) is a commercial [industrial control system security](https://cybersectools.com/categories/ics-security) solution by [Gambit Cyber](https://cybersectools.com/companies/gambit-cyber). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | FreeWave Zentry | Gambit KnightGuard for OT & Critical Infra | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Industrial Control System Security | Industrial Control System Security | | Verified | No | No | | Deployment type | Hybrid | Hybrid | | Company size fit | Mid-Market, Enterprise, SMB | Mid-Market, Enterprise | | Company | FreeWave Technologies | Gambit Cyber | | Headquarters | – | – | ### Use cases and capabilities | | FreeWave Zentry | Gambit KnightGuard for OT & Critical Infra | |---|---|---| | Zero Trust Architecture | Yes | – | | ZTNA | Yes | – | | IoT Security | Yes | – | | Critical Infrastructure | Yes | Yes | | SCADA | Yes | Yes | | Network Segmentation | Yes | – | | Remote Access | Yes | – | | Least Privilege | Yes | – | | Microsegmentation | Yes | – | | Blue Team | – | Yes | ### Core features **FreeWave Zentry** 5 features listed. Sign in on the page to see them. **Gambit KnightGuard for OT & Critical Infra** 6 features listed. Sign in on the page to see them. ### Integrations **FreeWave Zentry** 7 integrations listed. Sign in on the page to see them. **Gambit KnightGuard for OT & Critical Infra** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [FreeWave Zentry](https://cybersectools.com/tools/freewave-zentry) fits if you are a small business. ## FreeWave Zentry vs Gambit KnightGuard for OT & Critical Infra FAQ Common questions when comparing FreeWave Zentry vs Gambit KnightGuard for OT & Critical Infra for industrial control system security. ### What is the difference between FreeWave Zentry and Gambit KnightGuard for OT & Critical Infra? **FreeWave Zentry**: OT-focused operational zero trust platform for secure field device access, built by FreeWave Technologies. **Gambit KnightGuard for OT & Critical Infra**: OT & critical infrastructure protection platform for threat-informed defense, built by Gambit Cyber. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes FreeWave Zentry and Gambit KnightGuard for OT & Critical Infra? **FreeWave Zentry** is made by FreeWave Technologies founded in 1993-01-01T00:00:00.000Z. **Gambit KnightGuard for OT & Critical Infra** is made by Gambit Cyber. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is FreeWave Zentry a good alternative to Gambit KnightGuard for OT & Critical Infra? Often, yes. FreeWave Zentry and Gambit KnightGuard for OT & Critical Infra are both Industrial Control System Security products, and both cover SCADA, Critical Infrastructure. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [FreeWave Zentry vs Vantelis Water](https://cybersectools.com/compare/freewave-zentry-vs-vantelis-water) - [FreeWave Zentry vs Blue Ridge Networks LinkGuard & CyberCloak](https://cybersectools.com/compare/blue-ridge-networks-linkguard-and-cybercloak-vs-freewave-zentry) - [FreeWave Zentry vs Xona](https://cybersectools.com/compare/freewave-zentry-vs-xona) - [Gambit KnightGuard for OT & Critical Infra vs Vantelis Water](https://cybersectools.com/compare/gambit-knightguard-for-ot-and-critical-infra-vs-vantelis-water) - [Gambit KnightGuard for OT & Critical Infra vs Blue Ridge Networks LinkGuard & CyberCloak](https://cybersectools.com/compare/blue-ridge-networks-linkguard-and-cybercloak-vs-gambit-knightguard-for-ot-and-critical-infra) - [Gambit KnightGuard for OT & Critical Infra vs Xona](https://cybersectools.com/compare/gambit-knightguard-for-ot-and-critical-infra-vs-xona) ## Alternatives to each - [See all FreeWave Zentry alternatives](https://cybersectools.com/alternatives/freewave-zentry) - [See all Gambit KnightGuard for OT & Critical Infra alternatives](https://cybersectools.com/alternatives/gambit-knightguard-for-ot-and-critical-infra) --- Source: https://cybersectools.com/compare/freewave-zentry-vs-gambit-knightguard-for-ot-and-critical-infra For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/freewave-zentry.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on FreeWave Zentry and Gambit KnightGuard for OT & Critical Infra: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md