Best Interactive Application Security Testing (IAST) Software

Researched and written by Lauren Worth

Interactive application security testing (IAST) software inspects and analyzes an application’s code from within to discover security vulnerabilities while the application is running. This testing method differs from both static application security testing (SAST), which runs without actually executing an application’s code, and dynamic application security testing (DAST), which uses a black-box testing method to perform tests from outside the application. IAST is a faster method for testing code than SAST, which can make it more desirable for teams looking to enhance their continuous delivery practices. However, IAST software’s real-time speed comes with a comparatively less thorough scanning technique. Unlike SAST software, which analyzes the entire codebase, IAST only executes at specific tester-defined points. IAST software notifies testers when vulnerabilities are discovered and offers remediation suggestions to help teams resolve the issue.

To qualify for inclusion in the interactive application security testing (IAST) category, a product must:

  • Test applications as they are running
  • Perform predefined tests from within the application
  • Notify teams of vulnerabilities in real time and offer remediation suggestions

How Many Interactive Application Security Testing (IAST) Software Products Does G2 Track?

Total Products under this Category: 19

Category Stats (Jun 2026)

  • Average Rating: 4.48/5 The average rating of products in this category, based on all submitted ratings
  • New Reviews This Quarter: 2
  • Buyer Segments: Small-Business 40% │ Mid-Market 40% │ Enterprise 20% Represents the distribution of reviewers across all products in this category.
  • Top Trending Product: Veracode Application Security Platform (+0.74%) - Among all products in this category, Veracode Application Security Platform recorded the largest rating increase compared to last month

Last updated: June 17, 2026

How Does G2 Rank Interactive Application Security Testing (IAST) Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 400+ Authentic Reviews
  • 19+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

Best Interactive Application Security Testing (IAST) Software At A Glance

Leader:
Invicti (formerly Netsparker)
Highest Performer:
Semgrep
Easiest to Use:
Invicti (formerly Netsparker)
Top Trending:
Semgrep
Best Free Software:
Contrast Security

Invicti (formerly Netsparker)

(69)4.6 out of 5
Product Description

Invicti (formerly known as Netsparker) is an enterprise application and API security testing platform that helps organizations secure thousands of web applications and APIs at scale while dramatically

Industries: Computer Software, Information Technology and Services · Market Segment: 46% Enterprise, 28% Mid-Market
ProsEase of Use, Scanning Technology, Features, Reporting Quality, Vulnerability Detection
ConsPoor Customer Support, Slow Performance, Slow Scanning, API Issues, Complex Setup
Year Founded
2018
HQ Location
Austin, Texas
Company Website
https://www.invicti.com/
Twitter
@InvictiSecurity
LinkedIn® Page
https://www.linkedin.com/company/invicti-security/people/

HCL AppScan

(76)4.1 out of 5
Product Description

HCL AppScan is a comprehensive suite of market-leading application security testing solutions (SAST, DAST, IAST, SCA, API), available on-premises and on-cloud. These powerful DevSecOps tools pinpoint

Industries: Information Technology and Services, Computer & Network Security · Market Segment: 54% Enterprise, 28% Small-Business
Year Founded
1999
HQ Location
Noida, Uttar Pradesh
Company Website
https://hcl-software.com/
Twitter
@hcltech
LinkedIn® Page
https://www.linkedin.com/company/1756/
Ownership
NSE - National Stock Exchange of India
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Contrast Security

(49)4.5 out of 5
Product Description

Contrast Security is the global leader in Application Detection and Response (ADR), empowering organizations to see and stop attacks on applications and APIs in real time. Contrast embeds patented thr

Industries: Insurance, Information Technology and Services · Market Segment: 67% Enterprise, 20% Mid-Market
ProsAccuracy of Findings, Accuracy of Results, Vulnerability Detection, Automated Scanning, Automation
ConsComplex Setup, Difficult Setup, Performance Issues, Problematic Updates, Setup Complexity
Year Founded
2014
HQ Location
Pleasanton, CA
Company Website
https://contrastsecurity.com
Twitter
@contrastsec
LinkedIn® Page
https://www.linkedin.com/company/contrast-security/

OpenText Core Application Security

(34)4.1 out of 5
Product Description

Fortify on Demand (FoD) is a complete Application Security as a Service solution. It offers an easy way to get started with the flexibility to scale. In addition to static and dynamic, Fortify on Dema

Industries: Information Technology and Services · Market Segment: 41% Enterprise, 32% Small-Business
Year Founded
1991
HQ Location
Waterloo, ON
Company Website
https://www.opentext.com/
Twitter
@OpenText
LinkedIn® Page
https://www.linkedin.com/company/2709/
Ownership
NASDAQ:OTEX
Phone
+1-519-888-7111

Checkmarx

(42)4.2 out of 5
Product Description

Checkmarx is a type of application security solution designed to help organizations safeguard their software development processes while enhancing efficiency and reducing costs. The Checkmarx One plat

Industries: Information Technology and Services, Computer Software · Market Segment: 57% Enterprise, 21% Mid-Market
ProsImplementation Ease, User Interface, Accuracy of Results, Automation Testing, Customer Support
ConsFalse Positives, Lacking Features, Missing Features, Poor Navigation
Year Founded
2006
HQ Location
Paramus, NJ
Company Website
https://www.checkmarx.com
Twitter
@Checkmarx
LinkedIn® Page
https://www.linkedin.com/company/checkmarx

Semgrep

(55)4.6 out of 5
Product Description

Semgrep is a modern static analysis (SAST), software composition analysis (SCA), and secrets detection platform designed for both developers and security teams. It combines fast, deterministic analysi

Industries: Information Technology and Services, Computer Software · Market Segment: 45% Enterprise, 42% Mid-Market
ProsEase of Use, Features, Vulnerability Detection, Scanning Efficiency, Security
ConsNot User-Friendly, Limited Features, Difficult Learning, Lack of Guidance, Learning Curve
Year Founded
2017
HQ Location
San Francisco, US
Company Website
https://semgrep.dev
Twitter
@semgrep
LinkedIn® Page
https://www.linkedin.com/company/returntocorp

Veracode Application Security Platform

(26)3.8 out of 5
Product Description

Veracode helps companies that innovate through software deliver secure code on time. Unlike on-premise solutions that are hard to scale and focused on finding rather than fixing, Veracode comprises a

Industries: Information Technology and Services · Market Segment: 69% Enterprise, 31% Mid-Market
ProsAccuracy of Findings, Detailed Information, Scanning Efficiency, Security, Vulnerability Detection
ConsLack of Information, Poor Customer Support, Complexity, Confusing Interface, Cost Issues
Year Founded
2006
HQ Location
Burlington, MA
Company Website
https://veracode.com
Twitter
@Veracode
LinkedIn® Page
https://www.linkedin.com/company/27845/

Akto API Security Platform

(55)4.5 out of 5
Product Description

Akto is a trusted platform for application security and product security teams to build an enterprise-grade API security program throughout their DevSecOps pipeline. Our industry-leading suite of — AP

Industries: Financial Services, Information Technology and Services · Market Segment: 44% Mid-Market, 40% Small-Business
ProsEase of Use, API Testing, Automation Testing, API Management, Security
ConsComplex Setup, Poor Documentation, API Issues, Complexity, Setup Complexity
Year Founded
2022
HQ Location
San Francisco, California
Company Website
https://www.akto.io
Twitter
@Aktodotio
LinkedIn® Page
https://www.linkedin.com/company/akto-io/

NowSecure

(27)4.6 out of 5
Product Description

NowSecure Inc., based in Oak Park, Illinois, was formed in 2009 with a mission to advance mobile security worldwide. We help secure mobile devices, enterprises and mobile apps.

Market Segment: 41% Mid-Market, 37% Enterprise
Year Founded
2009
HQ Location
Chicago, Illinois
Company Website
https://www.nowsecure.com
Twitter
@nowsecuremobile
LinkedIn® Page
https://www.linkedin.com/company/nowsecure

GuardRails

(29)4.3 out of 5
Product Description

GuardRails is an end-to-end security platform that makes AppSec easier for both security and development teams. We scan, detect, and provide real-time guidance to fix vulnerabilities early. Trusted b

Industries: Information Technology and Services, Financial Services · Market Segment: 52% Small-Business, 48% Mid-Market
ProsSecurity, Vulnerability Detection, Ease of Use, Error Reduction, Threat Detection
ConsMissing Features, Time Management, Bug Issues, Dashboard Issues, False Positives
Year Founded
2017
HQ Location
Singapore, Singapore
Company Website
https://www.guardrails.io
Twitter
@guardrailsio
LinkedIn® Page
https://www.linkedin.com/company/13599521

PT Application Inspector

(3)5.0 out of 5
Product Description

PT Application Inspector™ (PT AI™) is a comprehensive source code analysis tool that offers protection for web applications of any scale. Its holistic approach combines the advantages of static, dynam

Market Segment: 67% Enterprise, 33% Small-Business
HQ Location
N/A
Company Website
https://www.ptsecurity.com
Twitter
@PTsecurity_UK
LinkedIn® Page
https://www.linkedin.com/company/positivetechnologies/

Seeker

(2)4.8 out of 5
Product Description

Accurate, automated security testing for your web applications. The industrys first IAST solution with active verification and sensitive-data tracking for web-based applications.

Market Segment: 50% Mid-Market, 50% Small-Business
Year Founded
1986
HQ Location
Mountain View, CA
Company Website
https://www.synopsys.com/
Twitter
@synopsys
LinkedIn® Page
https://www.linkedin.com/company/2457/
Ownership
NASDAQ:SNPS

ZeroThreat

(10)4.8 out of 5
Product Description

ZeroThreat is an AI-powered web application and API penetration testing platform designed to identify real, exploitable vulnerabilities, not just surface-level findings. Built for modern engineering t

Market Segment: 50% Enterprise, 30% Mid-Market
ProsEase of Use, Vulnerability Detection, Accuracy of Results, Setup Ease, Easy Setup
ConsInefficient Filtering, Integration Issues, Limited Integration, Slow Performance, UX Improvement
HQ Location
Delaware, US
Company Website
https://zerothreat.ai/
LinkedIn® Page
https://www.linkedin.com/company/zerothreat

Staris

(1)5.0 out of 5
Product Description

Staris is an AI-powered application security validation platform that continuously discovers, proves, and remediates exploitable vulnerabilities in running applications — in hours, not weeks. Traditi

Market Segment: 100% Small-Business
HQ Location
N/A
Company Website
https://staris.tech
LinkedIn® Page
https://www.linkedin.com/company/staris-security/

Data Theorem

(1)4.0 out of 5
Product Description

RamQuest’s solutions include our fully integrated closing, escrow accounting, imaging, transaction management, esigning, and digital marketplace solutions and are available on-premise or in a hosted e

Market Segment: 100% Enterprise
Year Founded
2013
HQ Location
Palo Alto, California, United States
Company Website
https://www.datatheorem.com
LinkedIn® Page
https://www.linkedin.com/company/datatheorem/