Best Runtime Application Security Tools in 2026: 9 Tools Compared

Contrast ADR places an agent inside the application server process, giving it deep context on attacks as they happen, including which code path and data are involved. That depth lets it block exploits with fewer false positives than edge-only tools, and it supports more languages than Java-only rivals. Public pricing on AWS Marketplace lists around 1,800 dollars per concurrent host for 12 months, up to 10 hosts before a private offer.

Assess and Scan sit on separate listings, so buyers should confirm what is included. But for AppSec teams that want one agent across languages with real runtime context, Contrast ADR is the strongest dedicated server-side choice.

Waratek instruments the Java Virtual Machine itself, giving compiler-level runtime protection for Java estates, including legacy stacks that teams cannot rewrite. Its Secure product provides protection, while its legacy product covers legacy JRE, WebLogic, and Tomcat environments that other tools no longer support. That focus makes it the best choice for Java-heavy estates with old, business-critical applications.

It is Java only, and pricing is quote-only, scoped per JVM. But for organizations running legacy Java they cannot modernize quickly, Waratek's depth is unmatched.

Jscrambler protects JavaScript in the browser, where traditional server-side RASP cannot reach. Its Code Integrity, Webpage Integrity, and Iframe Integrity products detect tampering, monitor third-party scripts, and protect payment pages from skimming attacks such as Magecart. Integration into CI pipelines makes protection part of the build, not an afterthought.

It is client-side only, so it does not replace server-side protection, and obfuscation alone will not virtual-patch a server vulnerability. But for teams whose crown-jewel logic or payment page lives in browser JavaScript, Jscrambler is the best dedicated client-side tool.

Guardsquare hardens Android and iOS binaries against reverse engineering, with DexGuard for Android and iXGuard for iOS providing obfuscation, anti-tamper checks, and environment detection. Its AppSweep scanner offers a free entry point for finding security issues in mobile apps. That shielding depth comes from Guardsquare's ProGuard heritage and long mobile focus.

Shielding pricing is quote-based, and Guardsquare is a protection tool, not a full testing platform. But for mobile teams that need their binary to resist analysis and tampering, Guardsquare is the best shielding choice.

Appdome protects mobile apps without an SDK: teams upload their iOS or Android binary, select protections in a no-code console, and Appdome fuses them into the binary in CI. That approach avoids developer integration work and covers anti-tampering, anti-debugging, jailbreak detection, and data protection in one flow.

It is mobile only, so server applications need another tool, and some controls can interfere with legitimate debug and mobile device management flows. But for mobile teams that want runtime protection without SDK work, Appdome is the fastest route.

Datadog Application Security adds runtime protection to Datadog's observability platform, using trace context to link attacks to specific requests, services, and code. For teams already running Datadog agents, that means runtime security without deploying a new agent, and pricing follows Datadog's usage model rather than a separate per-host RASP license.

Its runtime depth is below dedicated agents like Contrast, since it is built on observability rather than in-process instrumentation. But for Datadog estates, activating existing runtime security is the cheapest and fastest first step.

Dynatrace Application Security, like Datadog's, builds runtime protection on observability, giving security teams application context, topology, and code-level detail for attacks. Existing Dynatrace users can activate it without a new agent, and its automatic discovery maps which applications and vulnerabilities matter most.

Dedicated RASP agents offer deeper in-process blocking, and Dynatrace is most valuable for teams already invested in its platform. But as a first runtime layer for Dynatrace estates, it is a strong, low-friction choice.

Imperva WAAP combines web application firewall, bot management, API protection, and runtime controls in one integrated platform. That breadth suits teams that want application-layer protection managed together, with deployment options spanning edge, cloud, and on-premises environments.

Pricing is quote-only, and runtime depth depends on which deployment and modules a team buys. But for organizations that want one vendor for application protection from edge to runtime, Imperva is a credible integrated choice.

DoveRunner AppSealing offers no-code sealing of Android and iOS binaries, with a listed Professional price of 129 dollars per package per month and a 30-day trial. That published pricing is rare in mobile RASP, where most vendors are quote-only, and it makes DoveRunner the easiest mobile runtime tool to budget for.

The Professional tier caps at 15,000 monthly active devices, and multi-DRM features are a separate product. But for smaller mobile teams that want listed pricing and fast sealing, DoveRunner is the best budget option.