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)?
Runtime protection for apps and APIs detecting and blocking exploits and attacks
AI-powered automated vuln scanning for apps, APIs, domains, and cloud
OpenSCA Project is a dependency security scanner that runs in the browser.
Platform for API & app security with discovery, testing, and protection
Automated security design review platform for developers
Load-balancing solution by Microsoft Azure with global infrastructure and financial guidance.
Comprehensive suite for advanced file analysis and software supply chain security.
Syntax highlighting for Smali (Dalvik) Assembly language in Vim.
A project exploring minimal set of restrictions for running untrusted code using Linux containers in a concise codebase.
An open-source tool for detecting and analyzing Android apps' vulnerabilities and security issues.
Realtime privacy monitoring service for smartphones that analyzes how apps handle private information.
Argus-SAF is a static analysis framework for security vetting Android applications.
ModSecurity is an open-source web application firewall that provides a flexible and scalable way to monitor and control HTTP traffic.
A security feature to prevent unexpected manipulation of fetched resources.
FlowDroid is a context-, flow-, field-, object-sensitive and lifecycle-aware static taint analysis tool for Android applications.
A static analysis tool for Android apps that detects malware and other malicious code
Cloud-based service for testing and analyzing Android and iOS apps for malware, vulnerabilities, and security threats.
An open-source web application security scanner framework that identifies vulnerabilities in web applications.
CI/CD security platform for GitHub Actions with runtime threat detection
Unified platform for SBOM, CBOM, and post-quantum cryptography readiness management
Verifies vendor SBOMs against shipped artifacts to surface undeclared components
Agentless, AI-driven bot detection and mitigation for web, app, and API traffic
SCA platform for detecting and managing third-party component risks in the SDLC
AI/RAG-based threat modeling tool for requirements and design stages of SDL
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.