Best API Security Software in the UK
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Compare the Top API Security Software in the UK as of October 2025
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What is API Security Software in the UK?
API security software is designed to protect APIs from security threats such as unauthorized access, data breaches, and denial-of-service attacks. These tools monitor, authenticate, and secure the connections between APIs and the systems they interact with, ensuring that only authorized users and systems can access the data or services offered by the API. Features typically include encryption, rate limiting, authentication (such as OAuth, JWT), API traffic monitoring, threat detection, and automated security testing. API security software is crucial for businesses that rely on APIs to connect with third-party services, mobile apps, or microservices, as it helps mitigate risks and maintain data integrity. Compare and read user reviews of the best API Security software in the UK currently available using the table below. This list is updated regularly.
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1
KrakenD
KrakenD
KrakenD is a high-performance API Gateway optimized for resource efficiency, capable of managing 70,000 requests per second on a single instance. The stateless architecture allows for straightforward, linear scalability, eliminating the need for complex coordination or database maintenance. It supports various protocols and API specifications, with features like fine-grained access controls, data transformation, and caching. Unique to KrakenD is its ability to aggregate multiple API responses into one, streamlining client-side operations. Security-wise, KrakenD aligns with OWASP standards and doesn't store data, making compliance simpler. It offers a declarative configuration and integrates with third-party logging and metrics tools. With transparent pricing and an open-source option, KrakenD is a comprehensive API Gateway solution for organizations prioritizing performance and scalability.">
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Quantum Armor
Silent Breach
Your attack surface is the sum of every attack vector that can be used to breach your perimeter defenses. In other words, it is the total quantity of information you are exposing to the outside world. Typically, the larger the attack surface, the more opportunities hackers will have to find a weak link which they can then exploit to breach your network. Professional hackers typically follow the cyber kill chain when attacking a target, and surveying the target's attack surface is normally the very first step in this process; what is known as advanced reconnaissance. Reducing the attack surface can minimize risk further down the cyber kill chain, preventing attacks before they even occur by eliminating potential attack vectors as early as possible. The cyber kill chain is a method of categorizing and tracking the various stages of a cyberattack from the early reconnaissance stages to the exfiltration of data.Starting Price: From $49/asset/month -
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SKUDONET
SKUDONET
SKUDONET Enterprise Edition is an Application Delivery and Security Platform built on Linux Debian 12.5 LTS for critical enterprise environments. Formerly known as Zevenet, it provides advanced L4/L7 load balancing, integrated WAF, TLS management with Let’s Encrypt and wildcard support, and protocol-aware traffic inspection across on-premises, hybrid, or cloud deployments, including SkudoCloud SaaS. A free trial is available for evaluation on the SKUDONET website. Key Features & Benefits: • High Availability: Clustering and failover to minimize downtime. • Advanced Security: WAF, L7 filtering, DoS protection, TLS with Let’s Encrypt and wildcard support. • Scalability: Optimized for high-throughput workloads with multi-core processing and efficient packet handling. • Traffic Control: Session persistence, custom routing rules, and granular L4/L7 inspection. • Centralized Management: Unified dashboard for configuration, monitoring, and policy automation.Starting Price: $1736/year/appliance -
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Tyk
Tyk Technologies
Tyk is a leading Open Source API Gateway and Management Platform, featuring an API gateway, analytics, developer portal and dashboard. We power billions of transactions for thousands of innovative organisations. By making our capabilities easily accessible to developers, we make it fast, simple and low-risk for big enterprises to manage their APIs, adopt microservices and adopt GraphQL. Whether self-managed, cloud or a hybrid, our unique architecture and capabilities enable large, complex, global organisations to quickly deliver highly secure, highly regulated API-first applications and products that span multiple clouds and geographies.Starting Price: $600/month -
5
Unprotected web applications and APIs are the easiest point of entry for hackers and vulnerable to a number of attack types. FortiWeb's AI-enhanced and multi-layered approach protects your web apps from the OWASP Top 10 and more. FortiWeb ML customizes the protection of each application, providing robust protection without requiring the time-consuming manual tuning required by other solutions. With ML, FortiWeb identifies anomalous behavior and, more importantly, distinguishes between malicious and benign anomalies. The solution also features robust bot mitigation capabilities, allowing benign bots to connect (e.g. search engines) while blocking malicious bot activity. FortiWeb also features API discovery and security, as well as threat analytics to identify meaningful security incidents. FortiWeb is available as an appliance, VM, and fully featured WAF-as-a-Service - which is available to trial and purchase in most cloud marketplaces.Starting Price: $30/mo for 1 app on SaaS
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Graylog
Graylog
Built on the Graylog Platform, Graylog Security is the industry’s best-of-breed threat detection, investigation, and response (TDIR) solution. It simplifies analysts’ day-to-day cybersecurity activities with an unmatched workflow and user experience while simultaneously providing short- and long-term budget flexibility in the form of low total cost of ownership (TCO) that CISOs covet. With Graylog Security, security analysts can: 1. Decrease risk and metrics like mean time to detect (MTTD) by aligning threat detection coverage to meet your security objectives 2. Reduce TCO with native data routing and data tiering functionality 3. Reduce key metrics like mean time to respond (MTTR) by quickly resolving the alerts that matter. Graylog Security is a robust, scalable solution that empowers analysts to detect and respond to cybersecurity threats efficiently. With integrated SOAR functionality, it automates repetitive tasks, orchestrates workflows, and accelerates incident response.Starting Price: $1550/month -
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Ambassador
Ambassador Labs
Ambassador Edge Stack is a Kubernetes-native API Gateway that delivers the scalability, security, and simplicity for some of the world's largest Kubernetes installations. Edge Stack makes securing microservices easy with a comprehensive set of security functionality, including automatic TLS, authentication, rate limiting, WAF integration, and fine-grained access control. The API Gateway contains a modern Kubernetes ingress controller that supports a broad range of protocols including gRPC and gRPC-Web, supports TLS termination, and provides traffic management controls for resource availability. Why use Ambassador Edge Stack API Gateway? - Accelerate Scalability: Manage high traffic volumes and distribute incoming requests across multiple backend services, ensuring reliable application performance. - Enhanced Security: Protect your APIs from unauthorized access and malicious attacks with robust security features. - Improve Productivity & Developer Experience -
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Cequence Security
Cequence Security
Start analyzing and protecting your APIs with passive, inline or API-based integration with any existing network component – API gateway, proxy, CDN or ingress controller. Predefined policies, fine-tuned using threat patterns observed in protecting billions of API transactions per day delivers unmatched, out-of-the-box protection. A rich user interface and an open, API-based architecture enables integration with threat intelligence feeds, CI/CD framework tools, other security components, and SIEM/SOAR/XDR solutions. Patented ML-based analysis eliminates JavaScript and SDK integration pen-alties such as extended development cycles, slow page loads and forced mobile-app upgrades. ML-based analysis generates a unique Behavioral Fingerprint to determine malicious intent and continually tracks attackers as they retool. -
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SyncTree
Ntuple
SyncTree strives to be a "Super Connecting Platform" that can easily connect any services you want. With SyncTree, which consists of SyncTree STUDIO, a solution for building backend business logic with block coding, and Block Store, a platform for buying and selling pre-made backend function blocks like App Store, you can organically utilize data and connect services to achieve unlimited service expansion. Based on aPaaS, Block Store provides APIs from various services such as ChatGPT, DALLE, YouTube, etc. in the form of 'backend function blocks', which you can subscribe to and then combine as you want quickly in SyncTree STUDIO to build your business logic. SyncTree is for everyone, whether you're an individual or a business, and you can subscribe and use it according to your needs, from the free version to the PRO version.Starting Price: Free/1Month/3,000 Call -
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Beagle Security
Beagle Security
Beagle Security helps you to discover website & API security issues at the right time and address them in the right way. AI-powered core for test case selection, false-positive reduction & accurate vulnerability assessment reports. Integrate with your CI/CD pipeline & communication apps for an automated and continuous vulnerability assessment process. Fix security issues by following the actionable steps provided and improve your website’s security. Get assistance from our security team if you need help addressing a specific security issue or for anything relating to security. Built with the vision to provide affordable security solutions for growing businesses to address their concerns. Years of research and development combined with our industry experience lead to what we have today. We are continuously innovating to reduce human effort and improve the accuracy and efficiency of penetration testing with the help of artificial intelligence.Starting Price: $99 per month -
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Telepresence
Ambassador Labs
Telepresence streamlines your local development process, enabling immediate feedback. You can launch your local environment on your laptop, equipped with your preferred tools, while Telepresence seamlessly connects them to the microservices and test databases they rely on. It simplifies and expedites collaborative development, debugging, and testing within Kubernetes environments by establishing a seamless connection between your local machine and shared remote Kubernetes clusters. Why Telepresence: Faster feedback loops: Spend less time building, containerizing, and deploying code. Get immediate feedback on code changes by running your service in the cloud from your local machine. Shift testing left: Create a remote-to-local debugging experience. Catch bugs pre-production without the configuration headache of remote debugging. Deliver better, faster user experience: Get new features and applications into the hands of users faster and more frequently.Starting Price: Free -
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Treblle
Treblle
Treblle is a federated API Intelligence platform built for enterprises that need full visibility, control, and security over their APIs. With a single integration, Treblle provides real-time API Discovery, Observability, Analytics, Governance, Runtime Security, and Developer Portals. It supports on-prem and private cloud deployments to meet strict compliance and data privacy requirements. Treblle helps teams shift left by surfacing API issues early in development and ensuring consistency across environments. Its AI-powered Integration Assistant simplifies onboarding and reduces manual effort. Trusted by global enterprises and recognized over 15 times by Gartner, Treblle accelerates innovation while giving you complete control over your API landscape.Starting Price: $25 per month -
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Panoptica
Cisco
Panoptica makes it easy to secure your containers, APIs, and serverless functions, and manage software bills of materials. It analyzes internal and external APIs and assigns risk scores. Your policies govern which API calls the gateway permits or disables. New cloud-native architectures allow teams to develop and deploy software more quickly, keeping up with the pace of today’s market. But this speed can come with a cost—security. Panoptica closes the gaps by integrating automated, policy-based security and visibility into every stage of the software-development lifecycle. Decentralized cloud-native architectures have significantly increased the number of attack surfaces. At the same time, changes in the computing landscape have raised the risk of catastrophic security breaches. Here are some of the reasons why comprehensive security is more important than ever before. You need a platform that protects the entire application lifecycle—from development to runtime.Starting Price: $0 -
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APIsec
APIsec
Hackers are targeting loopholes in API logic. Learn how to secure APIs and prevent breaches and data leaks. APIsec finds critical flaws in API logic that attackers target to gain access to sensitive data. Unlike traditional security solutions that look for common security issues, such as injection attacks and cross-site scripting, APIsec pressure-tests the entire API to ensure no endpoints can be exploited. With APIsec you’ll know about vulnerabilities in your APIs before they get into production where hackers can exploit them. Run APIsec tests on your APIs at any stage of the development cycle to identify loopholes that can unintentionally give attackers access to sensitive data and functionality. Security doesn’t have to slow down Development. APIsec runs at the speed of DevOps, giving you continuous visibility into the security of your APIs. No need to wait for the next scheduled pen-test, APIsec tests are complete in minutes.Starting Price: $500 per month -
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TeejLab is at the forefront of applying data science and machine learning to help organizations with evolving challenges of API economy. The first and only industry solution designed for API governance at enterprises of global scale. What is your security and compliance posture vis a vis mainframe and legacy apps communicating with internal and external information systems via APIs? We built world’s first software composition analysis system for discovering shadow/hidden, private/public APIs via a curated knowledge base. What Google did to websites, TeejLab is doing to Web APIs. Our modular product portfolio is designed to meet varied API Governance needs of enterprises and communities, cost-efficiently while providing flexibility to add additional capabilities as those needs evolve. Whether you are an engineering shop looking to discover and benchmark APIs or a well-established API consumer or producer of APIs ready to expand your product portfolio, we have it covered.Starting Price: $179 per month
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Akto
Akto
Akto is an open source API security in CI/CD platform. Key features of Akto include: 1. API Discovery 2. API Security Testing 3. Sensitive Data Exposure 4. API Security Posture Management 5. Authentication and Authorization 6. API Security in DevSecOps Akto helps developers and security teams secure APIs in their CI/CD by continuously discovering and testing APIs for vulnerabilities. Akto's pricing is transparent on website. Free tier is available. You can deploy both self-hosted and in cloud. It takes only few mins to deploy and see results. Akto can integrate with multiple traffic sources - Burpsuite, AWS, postman, GCP, gateways, etc. -
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Pynt
Pynt
Pynt is an innovative API Security Testing platform exposing verified API threats through simulated attacks. We help hundreds of companies such as Telefonica, Sage, Halodoc, and more, to continuously monitor, classify and attack poorly secured APIs, before hackers do. Pynt's leverages an integrated shift-left approach, and unique hack technology using home-grown attack scenarios, to detect real threats, discover APIs, suggest fixes to verified vulnerabilities, thereby eliminating the API attack surface risk. Thousands of companies rely on Pynt to secure the no. 1 attack surface - APIs, as part of their AppSec strategy.Starting Price: $1888/month -
18
BugDazz
SecureLayer7
BugDazz API Security Scanner by SecureLayer7 is a comprehensive tool designed to automatically detect vulnerabilities, misconfigurations, and security gaps in API endpoints, aiding security teams in protecting digital assets against increasing API-related threats and potential exploits. It offers real-time scanning capabilities, enabling the automatic detection of vulnerabilities as they arise. It supports authentication and access control management, allowing for the management of API controls within a single platform. BugDazz assists in achieving compliance by accelerating the generation of reports for standards such as PCI DSS and HIPAA. It integrates seamlessly with existing CI/CD pipelines, facilitating the acceleration of product rollouts. The scanner goes beyond standard OWASP Top 10 vulnerabilities, providing comprehensive protection against critical API security risks.Starting Price: $3,999 per year -
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Utilihive
Greenbird Integration Technology
Utilihive is a cloud-native big data integration platform, purpose-built for the digital data-driven utility, offered as a managed service (SaaS). Utilihive is the leading Enterprise-iPaaS (iPaaS) that is purpose-built for energy and utility usage scenarios. Utilihive provides both the technical infrastructure platform (connectivity, integration, data ingestion, data lake, API management) and pre-configured integration content or accelerators (connectors, data flows, orchestrations, utility data model, energy data services, monitoring and reporting dashboards) to speed up the delivery of innovative data driven services and simplify operations. Utilities play a vital role towards achieving the Sustainable Development Goals and now have the opportunity to build universal platforms to facilitate the data economy in a new world including renewable energy. Seamless access to data is crucial to accelerate the digital transformation. -
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Imperva API Security
Imperva
Imperva API Security protects your APIs with an automated positive security model, detecting vulnerabilities in your applications, and shielding them from exploitation. Organizations manage a minimum of 300 APIs on average. Imperva’s API Security amplifies your security posture by automatically generating a positive security model for every uploaded API swagger file. APIs are being churned out faster than security teams can review, influence, and sign off on before they’re pushed into production. Imperva’s API Security enables your teams to stay ahead of DevOps via automation. Imperva API Security empowers your approach with out-of-the-box security rules adjusted to your APIs. This ensures complete OWASP API coverage and promotes visibility for all security events per API endpoint. With API Security, simply upload the OpenAPI specification file that your DevOps team has created and Imperva will automatically build a positive security model. -
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CloudGuard AppSec
Check Point Software Technologies
Automate your application security and API protection with AppSec powered by contextual AI. Stop attacks against your web applications with a fully automated, cloud-native application security solution. Eliminate the need to manually tune rules and write exceptions every time you make an update to your web application or APIs. Modern applications demand modern security solutions. Protect your web applications and APIs, eliminate false positives and stop automated attacks against your business. CloudGuard uses contextual AI to prevent threats with absolute precision, without any human intervention as the application is updated. Protect web applications, and prevent OWASP Top 10 attacks. From implementation through runtime, CloudGuard AppSec automatically analyzes every user, transaction, and URL to create a risk score to stop attacks without creating false positives. In fact, 100% of CloudGuard customers maintain fewer than 5 rule exceptions per deployment. -
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aapi
aapi
Act on identity events in other apps to make identity experiences more seamless, secure, compliant, and productive. Automatically embed the correct real-time actions for users and teams to efficiently act on data in downstream apps with a single click. Next-generation granular access into specific functions of apps, surpassing existing PAM and CASB solutions for true zero trust. Events, like identity provisioning and suspicious activity, are responded to by aapi to automate identity, application, and security responses. aapi automatically embeds correct real-time actions for users and teams to act on data in downstream apps within their chosen application with a single click, while access is protected by your IAM. Users are given access to only the individual features within apps they need, while keeping everything else safe and secure, all directly through your IAM.Starting Price: $4 per user per month -
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open-appsec
open-appsec
automatic web application & API security using machine learning open-appsec is an open-source initiative that builds on machine learning to provide pre-emptive web app & API threat protection against OWASP-Top-10 and zero-day attacks. It can be deployed as add-on to Kubernetes Ingress, NGINX, Envoy and API Gateways. open-oppsec simplifies maintenance as there is no threat signature upkeep and exception handling, like common in many WAF solutions. -
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Salt
Salt Security
The Salt Security API Security Platform protects APIs across their full lifecycle – build, deploy and runtime phases. Only Salt can capture and baseline all API traffic -- all calls and responses -- over days, weeks, even months. Salt uses this rich context to detect the reconnaissance activity of bad actors and block them before they can reach their objective. The Salt API Context Engine (ACE) architecture discovers all APIs, pinpoints and stops API attackers, and provides remediation insights learned during runtime to harden APIs. Only Salt applies cloud-scale big data to address API security challenges. Salt applies its AI and ML algorithms, which have been in the market for more than four years, to provide real-time analysis and correlation across billions of API calls. That level of context is essential for rich discovery, accurate data classification, and the ability to identify and stop “low and slow” API attacks, which occur over time. On prem solutions simply lack the data. -
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42Crunch
42Crunch
Your most valuable intelligence isn’t AI, it’s your developers. Empower them with tools to be the driving force behind API security – ensuring continuous, unparalleled protection across the entire API lifecycle. Push your OpenAPI definition to your CI/CD pipeline and automatically audit, scan and protect your API. Audit your OpenAPI / Swagger file against 300+ security vulnerabilities, we’ll rank them by severity level and tell you exactly how to fix them – making security a seamless part of your development lifecycle Enforce a zero-trust architecture by ensuring all your APIs meet a set security standard before production, scan the live API endpoints for potential vulnerabilities, and automate redeployment. Ensure security of all your APIs from design to deployment, get detailed insight about attacks on APIs in production – and protect against threats – without impacting performance. -
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Aiculus
Aiculus
Aiculus uses Artificial Intelligence (AI) to detect and respond to API security threats across all your API traffic in real-time. Our insights into the latest API-related threats strengthen your organization’s defense-in-depth strategy even further. So when you partner with us, you’re not just securing your APIs, your customer data, and your reputation, you also gain the confidence to expand and innovate with APIs. It screens each call to determine anomalous patterns and threat indicators, and detect API credential theft, compromised accounts and authentication bypass attacks. API Protector inspects every API call for misuse. It uses AI techniques such as machine learning and deep learning to perform behavioral analytics, and provide adaptive risk assessments in real-time. If the risk is too high, the request is denied, and your systems stay secure. Your Aiculus dashboard shows calls, threats and risk analyses across all your APIs. -
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Vorlon
Vorlon
Continuous near real-time detection and identification of your data in motion between third-party apps with remediation capabilities. By not continuously monitoring third-party APIs, you inadvertently grant attackers an average of seven months to act before you detect and remediate an issue. Vorlon continuously monitors your third-party applications and detects abnormal behavior in near real-time, processing your data every hour. Understand your risks in the third-party apps your Enterprise uses with clear insights and recommendations. Report progress to your stakeholders and board with confidence. Gain visibility into your third-party apps. Detect, investigate, and respond to abnormal third-party app activity, data breaches, and security incidents in near real-time. Determine whether the third-party apps your Enterprise uses are compliant with regulations. Provide proof of compliance to stakeholders with confidence. -
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Astra API Security Platform
Astra Security
Astra is a powerful API security platform designed to discover, test, and protect every API across your infrastructure. It continuously scans for over 10,000 vulnerabilities, including the OWASP API Top 10, data leaks, and authorization flaws. With Astra, teams can detect Shadow, Zombie, and Orphan APIs, identify sensitive data exposures, and fix vulnerabilities before attackers exploit them. The platform combines automated scanning with manual penetration testing from certified experts to deliver enterprise-grade protection. Seamless integrations with AWS, GCP, Postman, and CI/CD tools make security part of your DevOps workflow. Trusted by over 1,000 engineering teams, Astra empowers businesses to secure their APIs continuously and confidently.Starting Price: $499/month -
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Levo.ai
Levo.ai
Levo.ai gives enterprises unparalleled visibility into their APIs while continuously discovering and documenting internal, external and partner/third-party APIs. Enterprises can then see the risk from their apps and prioritize it based on the sensitive data flows, AuthN/AuthZ usage and several other criteria. Levo.ai then continuously security tests all apps and APIs to find vulnerabilities in the SDLC as early as possible.
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