Best API Security Tools

42Crunch is a SaaS API security platform focused on securing APIs from design time through runtime. It uses OpenAPI Specification (OAS v2 and later) to audit API definitions, scan live endpoints for contract drift and common API vulnerabilities, and generate API firewall policies for protection. The platform is aimed at teams that want security controls embedded in API development and CI/CD workflows, especially enterprises with distributed development and multiple API stacks. Adjacent governance and inventory functions exist, but the core value is contract-driven API security testing and enforcement.

A10 Networks delivers secure, high-performance networking solutions that protect and scale critical applications across core, cloud, and edge environments

The Invicti Web + API (formerly Acunetix) legacy is built on runtime accuracy, speed, and proof your team can trust. We pioneered the DAST market 20+ years ago and continue to drive AppSec forward with innovations in AI, code-to-runtime correlation, and vulnerability management.

We make life better for billions of people, trillions of times a day

AppSentinels is a comprehensive API security platform that focuses on protecting the entire API lifecycle from development to runtime. It utilizes stateful API modeling and workflow analysis to identify sophisticated business logic attacks and data exfiltration that traditional WAFs often miss. The platform provides deep visibility into API discovery, vulnerability assessment, and real-time threat protection for REST, GraphQL, and AI-driven API endpoints.

AWS Key Management Service (AWS KMS) is AWS’s managed encryption key service for creating, storing, and controlling cryptographic keys used to protect data in AWS workloads and applications. It is positioned for organizations that want key lifecycle control without running their own HSM fleet, and it uses FIPS 140-3 Level 3 validated HSMs under the service boundary. Buyers typically use it for envelope encryption, application signing, and server-side encryption across AWS services. It is best suited to teams standardizing key governance inside AWS rather than managing separate on-premises key systems.

Barracuda is a leading cybersecurity company providing complete protection against complex threats

Bright Security (formerly NeuraLegion) provides an AI-powered Dynamic Application Security Testing (DAST) and API security platform built for developer-centric workflows. It focuses on identifying business logic vulnerabilities and security flaws early in the SDLC with low false positive rates. The platform integrates seamlessly into CI/CD pipelines, allowing security teams to empower developers to fix vulnerabilities before production without slowing down release cycles.

Cequence Security sells API Security as part of its Unified API Protection platform, focusing on runtime discovery, inventory, compliance checks, and attack detection for internal, external, third-party, managed, unmanaged, shadow, and zombie APIs. It integrates with API gateways and reverse proxies to inspect live traffic and evaluate API usage and risk without adding client-side instrumentation. The product is best suited for enterprises that need continuous API attack-surface visibility and runtime protection across SaaS, on-premises, or hybrid environments. Cequence also offers adjacent bot management and WAAP capabilities, but its API Security scope centers on discovery, conformance, and blocking API abuse.

Checkmarx One is an application security software platform built to help enterprises secure every stage of the SDLC while reducing engineering costs and accelerating development. As a leader in agentic application security testing, Checkmarx scans trillions of lines of code each year, helping organizations cut vulnerability density by more than half. Its autonomous security agents detect, prioritize, and counter AI-driven threats across legacy, modern, and AI-generated code at enterprise scale.

Check Point Software Technologies is a global leader in cyber security solutions, dedicated to protecting corporate enterprises and governments worldwide.

Curity was founded by identity specialists who had spent years working with identity and access management in large organizations. During that time, we saw a consistent challenge. Traditional IAM systems were designed for login portals and monolithic applications, while modern digital services were increasingly built on APIs, distributed systems and open identity standards. Organizations needed a different approach.

Data Theorem is a leading provider in modern application security. Its core mission is to analyze and secure any modern application anytime, anywhere.

Detectify is the application security platform that gives modern security teams ultimate control over their actual attack surface, delivering proprietary vulnerability data designed for both humans and agents.

Continuous Offensive Security for APIs and Applications

We deliver and secure every app

Developers change the way the world experiences the web: they drive the next groundbreaking innovation, power the companies that connect us, and create experiences that can transform our lives. And we built Fastly to make sure they always have what they need to make it happen.

One platform to discover, assess, and protect all AI usage across your organization. FireTail gives you complete coverage across every employee, browser, device, application, and agent. Get the visibility, security and control you need to enable AI innovation at scale.

HCL AppScan is an enterprise application security testing platform acquired from IBM in 2019. It provides integrated DAST, SAST, IAST, SCA, and API security testing across cloud and on-premises deployments. The platform serves large enterprises and regulated industries requiring federal compliance (FIPS 140-3 certified) and comprehensive governance. Best suited for organizations needing centralized application security orchestration with multi-scanner correlation and compliance reporting for PCI DSS, HIPAA, and GDPR.

Together, we provide innovative platforms designed to reduce the complexity and risks of managing and protecting more applications, data, and identities than any other company can.

Invicti Security combines DAST leaders Netsparker and Acunetix into a DAST-first ASPM platform for enterprise web application and API security. It uses proof-based validation via AcuSensor technology to confirm vulnerabilities like SQL injection and XSS with near-zero false positives. The platform correlates SAST, IAST, DAST, and SCA findings, providing runtime exploitability validation, code-level mapping to exact file/line, predictive risk scoring, and unified dashboards across testing tools. Best for DevSecOps teams needing accurate, automated scanning integrated with CI/CD workflows and compliance reporting for PCI DSS and SOC 2.

Kong enables the connectivity layer for the agentic era – securely connecting, governing, and monetizing APIs and AI tokens across any model or cloud.

Mend.io is the security platform built for every risk, across application security and AI security, securing the code layer, the AI layer, and the attack surface between them. Continuous protection across the full AI application lifecycle.

Noname Security is an API security platform now operated by Akamai after the June 2024 acquisition. In scope for API security, it focuses on discovering and inventorying APIs, assessing posture, and detecting runtime abuse across REST, GraphQL, SOAP, XML-RPC, JSON-RPC, and gRPC. It is best suited for organizations with large, mixed API estates that need visibility into shadow or unmanaged APIs and policy enforcement without relying only on an API gateway.

Okta is a cloud-based Identity and Access Management (IAM) platform that provides centralized identity governance, authentication, and authorization across on-premises, hybrid, and cloud environments. The vendor serves mid-market to enterprise organizations requiring SSO, MFA, and lifecycle management at scale. Okta is positioned as a foundational identity layer for hybrid infrastructure, with particular strength in organizations managing complex multi-application access across dispersed user bases.

Radware AppWall is Radware’s web application and API protection offering, positioned around positive security policy enforcement for HTTP-based services. In the API security scope, it protects REST, GraphQL, and SOAP endpoints with auto-generated policies, request validation, and attack blocking for abuse, injection, authentication bypass, and data theft attempts. It is best suited for enterprises that already use Radware application delivery infrastructure or need API protection tied to WAF policy enforcement rather than a standalone API gateway. The product is also used in environments with PCI-driven web application security requirements.

Rapid7 is a global leader in AI-powered managed cybersecurity operations, trusted to advance organizations' cyber resilience. Open and extensible, the Rapid7 Command Platform integrates security data, enriching it with AI, threat intelligence, and 25 years of expertise and innovation to reduce risk and disrupt attackers.

The world leader in Agentic Security

Datadog is the leading observability and security platform for the AI era, providing businesses with unified visibility across the technology stack to manage complexity at scale.

Sweet Security is redefining enterprise cloud protection. As the leading provider of Runtime CNAPP and AI Security solutions, Sweet unifies runtime context with advanced AI intelligence to protect the modern enterprise.

Secure modern applications by protecting the APIs, services, and data that power them.

Tyk is an open-source API gateway and API management platform that, in the API Security scope, provides request authentication, authorization, traffic controls, and policy enforcement for REST, GraphQL, gRPC, TCP, and SOAP APIs. It is best suited to teams that want to secure and govern APIs at the gateway layer while using a self-managed or cloud deployment model. Tyk also includes adjacent API management components such as analytics and a developer portal, but its security value is centered on controlling access, transport security, and request filtering at the edge.

Wallarm is the AI Control Platform for Enterprise AI, protecting every AI workload, API, and application in production, giving CISOs the governance they need and CIOs the speed they demand.

WSO2 API Manager is an open-source API management platform that, in the API Security category, centers on gateway-enforced authentication, authorization, throttling, threat protection, and traffic mediation for HTTP APIs and, in newer releases, GraphQL and asynchronous APIs. It is aimed at enterprises that need policy-driven control over exposed APIs across cloud, hybrid, and on-prem deployments. WSO2 also positions it as part of a broader API management stack, but its security value here is the gateway and policy enforcement layer rather than endpoint scanning or runtime app protection.

YazamTech Ltd. is a specialized cybersecurity vendor focused on Content Disarm & Reconstruction (CDR) technology, not a dedicated Email Security platform. While their CDR solutions can be applied to sanitize files within email streams to block infected attachments, they do not offer core email security capabilities like spam filtering, phishing detection, BEC prevention, or secure email gateways. The company is best positioned as a data security specialist for organizations needing to neutralize advanced threats in file streams, rather than as an email security buyer's primary solution. Their market position is niche within data sanitization, not email protection.