The closest Upstream Fusion API Security alternatives are Akamai API Security, Imperva API Security and Levo Runtime Application Security. Picking an Upstream Fusion API Security alternative comes down to fit: API Security coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.
38 alternativesClosest matches: Akamai API Security, Imperva API Security, Levo Runtime Application SecurityPage updated Nov 2026
The product
by Upstream
API security platform for automotive, mobility & transportation industries
Upstream Fusion API Security is a commercial API Security solution made by Upstream. The closest matches by shared tags and NIST CSF 2.0 coverage are Akamai API Security, Imperva API Security, Levo Runtime Application Security, Ammune API Discovery, and Operant AI API Threat Protection. All 38 alternatives on this page are ranked the same way.
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VisitThese 8 solutions overlap most with Upstream Fusion API Security. Each row says what the product does and, when the overlap is big enough, which capabilities it shares.
API security platform for discovery, testing, and protection of APIs
Key features: 10 listed. See them on the Akamai API Security page.
View Akamai API SecurityAkamai API Security alternativesUpstream Fusion API Security vs Akamai API Security
Unified API security platform for discovery, risk assessment, and mitigation
Runtime application security platform for API and AI stack protection
API security platform with discovery, WAF, bot protection, and DDoS defense
Runtime API threat protection for Kubernetes environments with discovery
Managed API security platform with discovery, DAST, WAF, and 24x7 SOC
AI-powered API security platform with threat detection and discovery
API security platform for discovery, testing, and protection of APIs
Inline API discovery and protection platform blocking attacks, abuse, and ATO.
API security platform for discovery, monitoring, and protection at edge
API security platform for discovery, testing, and runtime protection
Behavioral analytics platform for API and application threat detection
API security platform providing discovery, posture management, and threat detection
Platform for API & app security with discovery, testing, and protection
Platform for automated API security testing and runtime threat protection
API security platform for discovering, validating, and protecting API endpoints
API discovery, vulnerability scanning, and penetration testing platform
AI-powered API security tool detecting sensitive data & excessive data exposure
Agentless cloud API discovery, posture management, and drift detection.
API discovery, security, governance & lifecycle mgmt platform for enterprises
AI-powered API security testing platform with continuous attack simulation
AI-powered API security testing platform for continuous vulnerability scanning
API security platform for SMBs with threat detection and vulnerability mgmt.
API security tool that discovers APIs in code and addresses vulnerabilities
API security testing platform with discovery, scanning, and remediation
Dynamic API vulnerability scanner with payload-based testing and fuzzing
API discovery tool that maps application attack surface from source code
AI-powered API security platform using unsupervised deep learning
API data-in-motion protection using claims-based access and PoLP enforcement.
AI-driven API pentesting platform with schema-aware testing and fuzzing
API vulnerability scanning and testing for REST, SOAP, and GraphQL APIs
Zero trust API security platform with automated MFA for machine identities
API security scanner for automated vulnerability detection in CI/CD pipelines
Common questions when weighing alternatives to Upstream Fusion API Security.
The closest matches to Upstream Fusion API Security by shared tags and NIST CSF 2.0 coverage are Akamai API Security, Imperva API Security, Levo Runtime Application Security, Ammune API Discovery, and Operant AI API Threat Protection. All of them are API Security products.
This page shows 38 alternatives to Upstream Fusion API Security, all in the API Security category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.
Upstream Fusion API Security is a commercial API Security product. It needs a paid license or subscription. Only commercial alternatives are listed here. Free and open source products are under /free.
Upstream Fusion API Security is a API Security product in the Application Security category. You can compare it with the 38 other API Security products on this page.
Unified API security platform for discovery, risk assessment, and mitigation
Key features: 10 listed. See them on the Imperva API Security page.
View Imperva API SecurityImperva API Security alternativesUpstream Fusion API Security vs Imperva API Security
Runtime application security platform for API and AI stack protection
Key features: 10 listed. See them on the Levo Runtime Application Security page.
View Levo Runtime Application SecurityLevo Runtime Application Security alternativesUpstream Fusion API Security vs Levo Runtime Application Security
API security platform with discovery, WAF, bot protection, and DDoS defense
Key features: 10 listed. See them on the Ammune API Discovery page.
View Ammune API DiscoveryAmmune API Discovery alternativesUpstream Fusion API Security vs Ammune API Discovery
Runtime API threat protection for Kubernetes environments with discovery
Key features: 10 listed. See them on the Operant AI API Threat Protection page.
View Operant AI API Threat ProtectionOperant AI API Threat Protection alternativesUpstream Fusion API Security vs Operant AI API Threat Protection
Managed API security platform with discovery, DAST, WAF, and 24x7 SOC
Key features: 10 listed. See them on the Indusface AppTrana - API Protection page.
View Indusface AppTrana - API ProtectionIndusface AppTrana - API Protection alternativesUpstream Fusion API Security vs Indusface AppTrana - API Protection
AI-powered API security platform with threat detection and discovery
Key features: 10 listed. See them on the Prophaze API Security page.
View Prophaze API SecurityProphaze API Security alternativesUpstream Fusion API Security vs Prophaze API Security
API security platform for discovery, testing, and protection of APIs
Key features: 10 listed. See them on the Cequence API Security page.
View Cequence API SecurityCequence API Security alternativesUpstream Fusion API Security vs Cequence API Security
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