Application security is the discipline of finding and fixing the flaws that live in the code, dependencies, and runtime behavior of the software your organization builds and ships.
It spans the whole lifecycle: catching vulnerabilities before merge with static testing (SAST), software composition analysis, secrets detection, and threat modeling, then guarding what is live with dynamic and interactive testing (DAST/IAST), API security, web application firewalls and cloud WAAP, bot management and CAPTCHA, and runtime self-protection (RASP).
For most security leaders this is where the hardest tradeoff sits, because the people introducing risk are developers moving fast, and the controls that work are the ones that fit into the pipeline rather than fight it. Supply chain security, application security posture management (ASPM), mobile app security, and secure code training round out the category, and together they are how teams shift left without grinding shipping to a halt.
Fraud and account-takeover detection by real people now lives in Fraud & Payment Security, and smart-contract and blockchain security has its own Web3 & Blockchain Security category.
628 commercial products15 specializationsWhat is Application Security (AppSec)?
Hands-on AppSec training platform for dev & security teams across the SDLC.
AI-powered bot detection that classifies automated traffic to block threats in real time.
Web app security platform for vulnerability scanning & secure dev.
DAST scanner for web apps & APIs with CI/CD integration & 15k+ test cases.
Dynamic web app & API vulnerability scanner with free and paid tiers.
Website security suite with DDoS, WAF, malware scanning & bot protection.
Traces third-party library usage at function level to identify dependency risk.
Structured threat modeling & remediation service for enterprise security risk.
FIPS 140-2 compliant API gateway and Axway API Gateway replacement.
Open-source libs for embedding API security controls directly in code.
API data-in-motion protection using claims-based access and PoLP enforcement.
Python3 code protection against reverse engineering via opcode obfuscation.
Runtime RASP platform securing Android & iOS apps with no-code deployment.
Code signing & software supply chain security platform with policy governance.
Tool for searching, comparing, and evaluating open source dependencies.
Cloud-based bot detection and cyberfraud protection for web, mobile & APIs.
Bot management platform blocking bad bots & malicious AI across web, apps & APIs.
ML-based click fraud & bot detection tool to protect ad spend.
AI-powered tool that analyzes dev tickets for security risks.
Automates SBOM ingestion, validation, and vulnerability monitoring for supply chain risk.
Enterprise SBOM management platform for software supply chain security.
Client-side platform securing browser scripts, detecting fraud & ensuring PCI compliance.
Mobile app security audit covering code review, DAST, SAST, and pentesting.
628 commercial products across 15 specializations. 272 free products are listed under Free solutions
API Security
API security solutions and platforms for protecting REST APIs, GraphQL endpoints, and web services from security threats and unauthorized access.
Application Security Posture Management
Application Security Posture Management (ASPM) platforms that provide visibility into application security posture, risk assessment, and vulnerability management across software portfolios.
Dynamic Application Security Testing
Dynamic Application Security Testing (DAST) solutions that identify vulnerabilities in running web applications and APIs through automated scanning.
Shortlists, buying guides and market analysis from our resource library.
Compare 7 application security solutions, like Snyk, Veracode and Checkmarx One, on code scanning, open-source risk and how they rank findings.
Compare 7 mobile app security solutions, like Zimperium, Promon and NowSecure, on app testing, app shielding, runtime protection and build pipeline fit.
Compare 7 SAST solutions, like Checkmarx One, Snyk Code and Aikido, on accurate findings, language coverage, developer fit and clear fix advice.
Common questions about Application Security solutions: how to choose, pricing and comparisons.
Application security is the practice of protecting software from vulnerabilities across its lifecycle, from the code developers write to the dependencies they import to the running app exposed to users. It covers pre-deployment testing like SAST, SCA, and threat modeling, and runtime defenses like WAFs, API security, and RASP. The goal is shipping secure software without slowing delivery to a crawl.
API security is a specialized slice of application security focused on the endpoints applications expose to each other and to clients. Broader AppSec covers the entire codebase, dependencies, and runtime; API security narrows in on authentication, authorization, schema abuse, and business-logic attacks against APIs. As architectures move to microservices and headless apps, API security has grown into its own discipline rather than a feature of general scanners.
SAST analyzes source code or binaries without running the application, catching flaws early but generating false positives. DAST tests the running application from the outside, like an attacker, finding real exploitable issues but later in the cycle. IAST instruments the app during testing to combine both views with better accuracy. Most mature programs use more than one, since each catches what the others miss.
Start with where your risk concentrates: a company shipping APIs needs different coverage than one shipping mobile apps. Prioritize solutions that fit your developers' existing pipeline and IDE, because adoption beats raw detection depth. Watch the noise: false positive rates and triage burden quietly kill AppSec programs. Many teams now consolidate scanners under an ASPM layer rather than buying point solutions per testing type.
Open-source solutions like Semgrep, OWASP ZAP, and Trivy form a credible foundation, and plenty of teams run real programs on them. They tend to need more in-house tuning, lack the centralized triage and policy enforcement of commercial platforms, and rarely cover the full lifecycle alone. Most organizations land on a blend: open source for core scanning, commercial solutions where consolidation, support, and posture management matter at scale.
Company data as of 2026-11-03
Data Protection
Application Security (AppSec) is the practice of finding and fixing security weaknesses in software before and after it ships.
The shortlist
Reviewed by Nika (Nikoloz) Kokhreidze. Updated 2026-11-02.
More Application Security shortlists: Best API Security SolutionsBest Cloud WAAP SolutionsBest DAST SolutionsBest Mobile App Security SolutionsBest SAST Solutions
The most-opened side-by-side pages for Application Security solutions.