Best API Security Software

Compare the Top API Security Software as of October 2025

What is API Security Software?

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 currently available using the table below. This list is updated regularly.

  • 1
    ImmuniWeb

    ImmuniWeb

    ImmuniWeb

    ImmuniWeb SA is a global application security company operating in over 50 countries, headquartered in Geneva, Switzerland. Most of ImmuniWeb customers come from regulated industries, such as banking, healthcare, and e-commerce. ImmuniWeb® AI Platform leverages award-winning AI and Machine Learning technology for acceleration and intelligent automation of Attack Surface Management and Dark Web Monitoring. The data is later leveraged for a threat-aware and risk-based Application Penetration Testing for web, mobile, and API security testing. ImmuniWeb is the only company that offers a contractual zero false-positives SLA with a money-back guarantee. ImmuniWeb’s AI technology is a recipient of numerous awards and recognitions, including Gartner Cool Vendor, IDC Innovator, and the winner of “SC Award Europe” in the “Best Usage of Machine Learning and AI” category. ImmuniWeb® Community Edition runs over 100,000 daily tests, being one of the largest application security communities
    Starting Price: $499/month
  • 2
    Panoptica
    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
  • 3
    Data Theorem

    Data Theorem

    Data Theorem

    Inventory your apps, APIs, and shadow assets across your global, multi-cloud environment. Establish custom policies for different types of asset groups, automate attack tools, and assess vulnerabilities. Fix security issues before going into production, making sure application and cloud data is compliant. Auto-remediation of vulnerabilities with rollback options to stop leaky data. Good security finds problems fast, but great security makes problems disappear. Data Theorem strives to make great products that automate the most challenging areas of modern application security. The core of Data Theorem is its Analyzer Engine. Utilize the Data Theorem analyzer engine & proprietary attack tools to hack and exploit application weaknesses continuously. Data Theorem has built the top open source SDK called TrustKit, used by thousands of developers. Our technology ecosystem continues to grow so that customers can continue to secure their entire Appsec stack with ease.
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