# Best Interactive Application Security Testing (IAST) Software - Page 2 *By [Lauren Worth](https://research.g2.com/insights/author/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)](https://www.g2.com/categories/static-application-security-testing-sast), which runs without actually executing an application’s code, and [dynamic application security testing (DAST)](https://www.g2.com/categories/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](https://www.g2.com/categories/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. *Last updated: June 01, 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. ## Which Interactive Application Security Testing (IAST) Software Is Best for Your Use Case? - **Leader:** [Invicti (formerly Netsparker)](https://www.g2.com/products/invicti-formerly-netsparker/reviews) - **Highest Performer:** [Semgrep](https://www.g2.com/products/semgrep/reviews) - **Easiest to Use:** [Invicti (formerly Netsparker)](https://www.g2.com/products/invicti-formerly-netsparker/reviews) - **Top Trending:** [Semgrep](https://www.g2.com/products/semgrep/reviews) - **Best Free Software:** [Contrast Security](https://www.g2.com/products/contrast-security-contrast-security/reviews) --- **Sponsored** ### CAST Highlight By scanning the source code of your applications, CAST Highlight instantly maps your software, generating the insights to understand, improve, and transform it. CIOs, CTOs, Enterprise Architects use CAST to: - Get the true view of all technologies and frameworks - Quantify technical debt and the ways to pay it down - See what’s going to break next, and how best to fix it - Drive cloud adoption faster, knowing what to move and optimize - Prove progress to the board with facts and industry benchmarks Businesses move faster using CAST technology to understand, improve, and transform their software. Through semantic analysis of source code, CAST produces 3D maps and dashboards to navigate inside individual applications and across entire portfolios. This intelligence empowers executives and technology leaders to steer, speed, and report on initiatives such as technical debt, GenAI, modernization, and cloud. As the pioneer of the software intelligence field, CAST is trusted by the world’s leading companies and governments, their consultancies and cloud providers. See it all at castsoftware.com. [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=2835&secure%5Bdisplayable_resource_id%5D=1203&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=neighbor_category&secure%5Bplacement_resource_ids%5D%5B%5D=2041&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=58553&secure%5Bresource_id%5D=2835&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Finteractive-application-security-testing-iast%3Flocale%3Des%26page%3D2&secure%5Btoken%5D=42bb069fabd42f9928c2f00eb94084cd17f816d78c04f09b6e9719d4ad6968cf&secure%5Burl%5D=https%3A%2F%2Fwww.castsoftware.com%2Ftryhighlight%3Futm_campaign%3Dg2_clicks_ads%26utm_source%3Dcast_highlight%26utm_medium%3Dtrial_request&secure%5Burl_type%5D=free_trial) --- ## What Is Interactive Application Security Testing (IAST) Software? [DevSecOps Software](https://www.g2.com/categories/devsecops) ## What Software Categories Are Similar to Interactive Application Security Testing (IAST) Software? - [Static Application Security Testing (SAST) Software](https://www.g2.com/categories/static-application-security-testing-sast) - [Dynamic Application Security Testing (DAST) Software](https://www.g2.com/categories/dynamic-application-security-testing-dast) - [Software Composition Analysis Tools](https://www.g2.com/categories/software-composition-analysis)