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48 Best Upstream Fusion API Security Alternatives & Competitors (2026) | CybersecTools

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Upstream Fusion API Security

Best Upstream Fusion API Security Alternatives & Competitors in 2026

Top picks: Orca API Security, Imperva API Security, Levo Runtime Application Security — plus 45 more compared.

Application Security

Evaluating Upstream Fusion API Security alternatives comes down to matching Application Security capabilities to your environment, integrations, and budget rather than chasing feature parity. The options below are compared on what actually drives a switch: coverage, deployment fit, pricing, and real reviews from security teams. Independent and vendor-neutral: we never sell rankings.

Upstream Fusion API Security Alternatives and Competitors

Upstream Fusion API Security is a commercial API Security tool developed by Upstream. Security professionals most commonly compare it with Orca API Security, Imperva API Security, Levo Runtime Application Security, Indusface AppTrana - API Protection, and Prophaze API Security. All 48 alternatives are matched by shared capabilities, tags, and NIST CSF 2.0 coverage.

Data verified Jul 2026

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Top Upstream Fusion API Security Alternatives and Competitors at a Glance

A closer look at the 8 most relevant alternatives and competitors to Upstream Fusion API Security, including their key features and shared capabilities.

Orca API Security

Commercial

Agentless cloud API discovery, posture management, and drift detection.

Key features: Agentless API discovery across cloud environments, API security posture management, API drift detection, Shadow API identification, SideScanning technology for out-of-band data collection

View Orca API Security|Orca API Security alternatives|Compare Orca API Security

Imperva API Security

Commercial

Unified API security platform for discovery, risk assessment, and mitigation

Key features: Continuous API discovery including shadow APIs, OWASP API Security Top 10 risk assessment, Real-time BOLA detection and response, API Security Testing for shift-left vulnerability scanning, Business logic threat protection

View Imperva API Security|Imperva API Security alternatives|Compare Imperva API Security

Levo Runtime Application Security

Commercial

Runtime application security platform for API and AI stack protection

Key features: Runtime API and AI asset discovery and monitoring, Authentication scope and identity capture for machine-to-machine traffic, Unified runtime graph connecting APIs, agents, LLMs, and MCP servers, Integration with SAST/SCA tools, code, logs, and traffic sources, eBPF-based data collection

View Levo Runtime Application Security|Levo Runtime Application Security alternatives|Compare Levo Runtime Application Security

Indusface AppTrana - API Protection

Commercial

Managed API security platform with discovery, DAST, WAF, and 24x7 SOC

Key features: API discovery and inventory of shadow, zombie, and rogue APIs, OpenAPI (Swagger 3.0) specification generation, Dynamic API security testing with manual penetration testing, Autonomous virtual patching with 72-hour SLA, Schema-driven positive security model enforcement

View Indusface AppTrana - API Protection|Indusface AppTrana - API Protection alternatives|Compare Indusface AppTrana - API Protection

Prophaze API Security

Commercial

AI-powered API security platform with threat detection and discovery

Key features: Automated API discovery for known, unknown, and shadow APIs, AI-driven threat detection and mitigation, OWASP API Security Top 10 protection, Rate limiting and quota management, Real-time API monitoring and analytics

View Prophaze API Security|Prophaze API Security alternatives|Compare Prophaze API Security

Cequence API Security

Commercial

API security platform for discovery, testing, and protection of APIs

Key features: API discovery and inventory for internal, external, and third-party APIs, Automatic API specification generation, Runtime API catalog with risk assessment, OWASP API Security Top 10 risk categorization, ML-based sensitive data identification and masking

View Cequence API Security|Cequence API Security alternatives|Compare Cequence API Security

Wallarm API Security

Commercial

Unified API and AI security platform for discovery, protection, and testing

Key features: Automated API discovery and inventory, API topology mapping from traffic analysis, OWASP API Security Top 10 protection, AI-specific threat mitigation, Bot and Layer 7 DDoS protection

View Wallarm API Security|Wallarm API Security alternatives|Compare Wallarm API Security

Fastly API Security

Commercial

API security platform for discovery, monitoring, and protection at edge

Key features: Automatic API discovery at edge network, Detection of new and unintentional API calls, Integration with Next-Gen WAF for API traffic protection, API-focused DDoS attack detection and mitigation, Bot and crawler identification and mitigation

View Fastly API Security|Fastly API Security alternatives|Compare Fastly API Security

All 48 Alternatives & Competitors to Upstream Fusion API Security

Compare

Orca API Security

Agentless cloud API discovery, posture management, and drift detection.

Compare

Imperva API Security

Unified API security platform for discovery, risk assessment, and mitigation

Compare

Levo Runtime Application Security

Runtime application security platform for API and AI stack protection

Compare

Indusface AppTrana - API Protection

Managed API security platform with discovery, DAST, WAF, and 24x7 SOC

Compare

Prophaze API Security

AI-powered API security platform with threat detection and discovery

Compare

Cequence API Security

API security platform for discovery, testing, and protection of APIs

Compare

Wallarm API Security

Unified API and AI security platform for discovery, protection, and testing

Compare

Fastly API Security

API security platform for discovery, monitoring, and protection at edge

Compare

Data Theorem API Security

API security platform for discovery, testing, and runtime protection

Compare

Pynt Detect Sensitive Data and Excessive Data Exposure

AI-powered API security tool detecting sensitive data & excessive data exposure

Compare

Salt Security Illuminate

API security platform providing discovery, posture management, and threat detection

Compare

Salt Security Salt Collect

Analyzes API traffic to detect vulnerabilities, misconfigurations & data exposure

Compare

Akamai API Security

API security platform for discovery, testing, and protection of APIs

Compare

Traceable AppSec

Platform for API & app security with discovery, testing, and protection

Compare

42Crunch API Security Platform

Platform for automated API security testing and runtime threat protection

Compare

Cloudflare API Shield

API security platform for discovering, validating, and protecting API endpoints

Compare

Ammune API Discovery

API security platform with discovery, WAF, bot protection, and DDoS defense

Compare

Checkmarx API Security

API security tool that discovers APIs in code and addresses vulnerabilities

Compare

Operant AI API Threat Protection

Runtime API threat protection for Kubernetes environments with discovery

Compare

AI-powered API threat detection using behavioral fingerprinting & threat intel

Compare

Edgescan API Security Testing

API discovery, vulnerability scanning, and penetration testing platform

Compare

Cequence AI Gateway

Unified platform for API security, bot management, and AI gateway protection

Compare

TeejLab API Discovery Manager

API discovery, security, governance & lifecycle mgmt platform for enterprises

Compare

Ghost Security Exorcist

AI-driven code analysis tool for API discovery and vulnerability detection

Compare

APIsec API Security

AI-powered API security testing platform with continuous attack simulation

Compare

Equixly The Agentic AI Hacker

AI-powered API security testing platform for continuous vulnerability scanning

Compare

CloudMatos MatosSphere API Security

API security platform for SMBs with threat detection and vulnerability mgmt.

Compare

Escape API Security

API discovery, documentation, and security testing platform for APIs

Compare

Invicti API Security

API security testing platform with discovery, scanning, and remediation

Compare

Detectify API Scanning

Dynamic API vulnerability scanner with payload-based testing and fuzzing

Compare

Hypernative Guardian

Real-time transaction security for Web3 wallets and blockchain transactions

Compare

Pynt API Security Testing

API security testing platform with LLM-powered context awareness and attack simulation

Compare

Spherical Defense Autonomous Protection

AI-powered API security platform using unsupervised deep learning

Compare

ThreatX Attacker-Centric Behavioral Analytics

Behavioral analytics platform for API and application threat detection

Compare

Syhunt SyhuntAPI

API security testing tool for detecting vulnerabilities in web APIs

Compare

Mend API Security

API security solution within Mend's AppSec platform

Compare

42Crunch API Protection

API runtime protection with content validation, threat detection & throttling

Compare

42Crunch API Scan

Dynamic API security testing tool for OpenAPI contract conformance validation

Compare

42Crunch API Audit

API security audit tool for OpenAPI contracts with 300+ security checks

Compare

Prancer Autonomous API Security

AI-driven API pentesting platform with schema-aware testing and fuzzing

Compare

StackHawk API Discovery

API discovery tool that maps application attack surface from source code

Compare

Acunetix API Security Testing

API vulnerability scanning and testing for REST, SOAP, and GraphQL APIs

Compare

SecureLayer7 BugDazz API Security Scanner

API security scanner for automated vulnerability detection in CI/CD pipelines

Compare

Salt Security Salt Connect

API discovery and inventory tool for multi-cloud and on-prem environments

Compare

AI-powered runtime protection platform for WAF, API, and AI security

Compare

API data-in-motion protection using claims-based access and PoLP enforcement.

Compare

Forum Systems Sentry

API security & Zero Trust enforcement for Docker microservices.

Compare

Impart Precision LogGen

Customizable security log generation with code-based rules for SIEM enrichment

Also compare alternatives to:

Orca API Security alternatives Imperva API Security alternatives Levo Runtime Application Security alternatives Indusface AppTrana - API Protection alternatives Prophaze API Security alternatives Cequence API Security alternatives Wallarm API Security alternatives Fastly API Security alternatives Data Theorem API Security alternatives Pynt Detect Sensitive Data and Excessive Data Exposure alternatives Salt Security Illuminate alternatives Salt Security Salt Collect alternatives

Compare Upstream Fusion API Security with:

Upstream Fusion API Security vs Orca API Security Upstream Fusion API Security vs Imperva API Security Upstream Fusion API Security vs Levo Runtime Application Security Upstream Fusion API Security vs Indusface AppTrana - API Protection Upstream Fusion API Security vs Prophaze API Security Upstream Fusion API Security vs Cequence API Security Upstream Fusion API Security vs Wallarm API Security Upstream Fusion API Security vs Fastly API Security

Upstream Fusion API Security Alternatives FAQ

Common questions security professionals ask when evaluating alternatives and competitors to Upstream Fusion API Security.

What are the best alternatives to Upstream Fusion API Security?

The most popular alternatives to Upstream Fusion API Security include Orca API Security, Imperva API Security, Levo Runtime Application Security, Indusface AppTrana - API Protection, and Prophaze API Security. These API Security tools offer similar capabilities and are frequently compared by security professionals evaluating their options.

How many alternatives to Upstream Fusion API Security are available?

There are 48 alternatives to Upstream Fusion API Security listed on CybersecTools, all within the API Security category. Each alternative is matched based on shared capabilities, tags, and NIST CSF coverage areas.

Is Upstream Fusion API Security free or commercial?

Upstream Fusion API Security is a commercial API Security tool. It requires a paid license or subscription. Both free and commercial alternatives are available for comparison.

What type of tool is Upstream Fusion API Security?

Upstream Fusion API Security is a API Security tool within the broader Application Security category. It is used by security professionals for api security capabilities and can be compared against 48 similar tools.

Have more questions? Browse our categories or search for specific tools.

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