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Top 24 API Security Tools SaaS Companies in May 2026

As of May 2026, there are 24 SaaS companies in API Security Tools. They have combined revenues of $394.6M and employ 1.9K people. They have raised $899.6M and serve 150.3K customers combined.

API Security Tools are designed to protect application programming interfaces (APIs) from various security threats. These tools enable organizations to discover, manage, and secure their APIs throughout their lifecycle, ensuring that the data exchanged is confidential and integrity is maintained. Common features include authentication and authorization management, threat detection, and monitoring of API usage patterns to identify vulnerabilities and anomalies. Typical use cases for API security tools include protecting sensitive data transmission, preventing unauthorized access, and ensuring compliance with security standards. Users range from IT security teams and application developers to compliance officers who need to oversee and enforce security policies. These stakeholders typically rely on such tools to streamline security processes, enhance visibility, and respond effectively to potential security incidents.

Companies
24
Revenue
$394.6M
Funding
$899.6M
Employees
1.9K

Filters

Sorting: Highest -> Lowest

Filters
Revenue
All<$1M$1M-$5M$5M-$10M$10M-$100M$100M+
Funding (Locked)Growth (Locked)Team-Size (Locked)

Top API Security Tools Companies

Showing 10 of 8 companies ranked by annual revenue.

1
Secure Blink

Lewes, Delaware, United States

At Secure Blink, we're committed to fortifying the digital landscape against ever-evolving cybersecurity threats. With a focus on innovation and excellence, we specialize in providing cutting-edge solutions in Application Security, API security and Digital Forensics. Our flagship product, Threatspy is a Developer-first AppSec Management platform (DAST) that enables developers and Security Engineers to proactively identify and mitigate known and unknown vulnerabilities in their applications & API through automating detection, prioritization, and remediation processes. Endorsed by industry leaders and holding a stellar 4.7 rating on Gartner Peer Insight, Capterra, G2, and Product Hunt Secure Blink’ Threatspy is your partner in fortifying digital defences. Start a free Trial here: https://threatspy.secureblink.com/signup

Revenue
$770K
Customers
-
Year founded
2020
Funding
-
Team size
7
Growth
-
2
Quikk API

Nairobi, Kenya

Streamlined access to APIs in Africa. Quikk helps companies & developers connect to digital financial service providers in Africa through a unified API. Digital Financial services require significant levels of care, and the Quikk API keeps companies & developers secure and compliant. Quikk brings simplicity and standardisation to complex API labyrinths.

Revenue
$660K
Customers
-
Year founded
2021
Funding
-
Team size
6
Growth
-
3
MCP Snitch

Montreal, Quebec, Canada

Real-time security monitoring for MCP tools. Protect API keys, whitelist tool calls, and maintain complete control over your MCP environment.

Revenue
$440K
Customers
-
Year founded
2017
Funding
-
Team size
4
Growth
-
4
Metlo

San Francisco, California, United States

Open-source API security platform.

Revenue
$440K
Customers
-
Year founded
2021
Funding
-
Team size
4
Growth
-
5
OneAll

Bettembourg, Unknown, Luxembourg

Reunite and access your user data originating from different sources in a state-of-the-art security environment powered by web-delivered tools and a full-fledged JSON/REST API. Focus on your users and let us take care of the technology.

Revenue
$330K
Customers
-
Year founded
2011
Funding
-
Team size
3
Growth
-
6
EasyAuth

India

EasyAuth is an authentication toolkit that provides secure API authentication and authorization solutions.

Revenue
$169.8K
Customers
-
Year founded
2020
Funding
-
Team size
2
Growth
-
7
LaunchIAM Inc.

Austin, Texas, United States

Your go-to zero-trust REST API client! Enhance your digital security with seamless authentication and verification at every step. It's not just an API Client it's your digital guardian. Trust less, verify more!

Revenue
$100K
Customers
-
Year founded
-
Funding
-
Team size
1
Growth
-
8
LoginLlama

Walsall, England, United Kingdom

AI powered API to detect suspicious logins on your product

Revenue
$1K
Customers
-
Year founded
2023
Funding
-
Team size
1
Growth
-

Inclusion Criteria

- Tools must provide API discovery and inventory capabilities. - Must include methods for threat detection and response. - Should offer the ability to manage authentication and authorization mechanisms. - Must support monitoring and auditing of API activity. - Not just focused on vulnerability scanning; must also include remediation guidance and risk prioritization. - Should integrate with existing security frameworks and tools within an organization. - Must facilitate compliance with relevant security standards and regulations.