Best RASP Tools in 2026: 8 Tools Compared

#1

Contrast Security

Best for: Enterprises that want dedicated runtime protection plus developer context

Visit contrastsecurity.com

Contrast Security is the clearest example of RASP in this list. Its Protect agent sits inside the running application, watches how data flows through code, and can block exploit attempts such as injection and unsafe deserialization with context a network device cannot see. Because the same platform also covers assessment, a team can move from finding a weakness in testing to blocking its exploitation in production without switching vendors.

The cost and effort are enterprise scale. Contrast pricing is not published as a simple per seat rate, and reviewers commonly describe annual costs that grow with application count. That is reasonable for a crown jewel application, but it makes Contrast a poor fit for protecting dozens of low risk internal tools. Start with one or two critical applications, run in monitor mode first, and measure false positives and performance overhead before expanding.

#2

Imperva RASP

Best for: Regulated enterprises that need runtime blocking without code changes

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Imperva RASP is built for organizations that cannot easily rewrite an application, yet still need it protected in production. The agent applies runtime policies that block malicious requests from inside the application, even when the attack uses a vulnerability that has no patch yet. That virtual patching ability is valuable for legacy systems, vendor supplied applications, and systems under change freeze.

Buyers should ask how Imperva RASP is licensed in their case: as a standalone product, or as part of a wider Imperva application security bundle. Bundling can simplify procurement, but it can also hide the true RASP cost and make comparison with a dedicated tool harder. Test performance overhead on a production like workload, since any in-app agent adds latency, and confirm which languages and frameworks are covered for the specific applications in scope.

#3

Datadog App and API Protection

Best for: Teams that already run Datadog APM and want runtime security in the same agent

Visit datadoghq.com

Datadog App and API Protection, formerly known as Application Security Monitoring and built in part on Hdiv technology, is the practical RASP adjacent choice for Datadog shops. Because the Datadog agent already traces requests, adding application security gives security teams attack context tied to the same traces developers use for performance work. That shared view shortens the argument about whether an alert is real.

Pricing is clearer than most in this category: recent Datadog listings put App and API Protection at $31 per host per month billed annually, or $36 month to month, on top of base infrastructure and APM costs. That per host model suits containerized estates, but buyers must total the full Datadog bill, not just the security line. Start in detection mode, tune rules against real traffic, and confirm blocking support for each language before promising protection for the whole estate.

#4

Dynatrace Application Security

Best for: Dynatrace customers who want runtime security from OneAgent

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Dynatrace Application Security follows a similar logic to Datadog: if OneAgent is already on every host, runtime security can reuse that deployment instead of adding a new agent. The platform maps services, dependencies, and vulnerabilities in one view, which helps teams prioritize a runtime finding by business impact, not just by severity score. For cloud native microservices, that topology view is genuinely useful.

The limit is scope. Dynatrace is a platform purchase, not a small standalone RASP buy, and its security value is strongest where Dynatrace observability is already deep. Teams without Dynatrace should compare the full platform cost with a dedicated RASP tool before choosing it for security alone. As with other agents, run a pilot in monitor mode, check overhead on high traffic services, and confirm blocking behavior for the languages in production.

#5

Waratek

Best for: Java enterprises protecting legacy or hard to patch applications

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Waratek takes a JVM deep approach to RASP. Rather than watching only HTTP requests, it works at the Java runtime level to isolate risky operations and block exploitation paths inside the application. That depth matters for older Java applications that cannot be upgraded quickly, or for systems where a single vulnerability could expose sensitive data.

The obvious limit is language fit. A shop running Java, .NET, Node.js, Python, and Go will not get full coverage from a Java focused tool alone. Waratek is best treated as a specialist for the Java applications that matter most, alongside a broader platform for the rest. Ask for a proof of concept on the exact Java versions and frameworks in use, since legacy JVM compatibility is where these projects succeed or stall.

#6

OpenRASP

Best for: Developers and small teams that want free runtime protection

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OpenRASP, originally from Baidu, is the open source entry point in this list. It inserts a runtime agent into supported applications to detect and block common attacks, with rules that teams can inspect and adjust. For a small team, a side project, or a lab environment, it offers real runtime protection without a vendor contract.

The trade-off is support and staying power. Open source RASP needs someone on your team to deploy, update, and tune it, and there is no vendor service level agreement behind it. Language and framework coverage is also narrower than commercial tools, so check compatibility before planning a rollout. OpenRASP is a good way to prove the value of in-app protection, and a reasonable long term choice for non critical applications, but critical revenue systems usually need a supported commercial agent.

#7

AppSealing

Best for: Mobile teams that need runtime protection inside Android and iOS apps

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AppSealing covers the mobile side of RASP, which server side tools often miss. A mobile app runs on a device the vendor does not control, so it needs in-app checks for tampering, repackaging, debugging, and running on rooted or jailbroken devices. AppSealing adds those protections without requiring developers to write security code into the app, which speeds adoption for mobile teams.

Buyers should treat mobile RASP as an ongoing arms race, not a one time shield. Attackers update bypass tools regularly, so ask how often AppSealing updates its protections, how it handles false positives on legitimate devices, and what happens when a check fails: does the app block, warn, or report only? For banking, health, and payment apps, that failure behavior is a product decision as much as a security one, and it should be tested with real users before release.

#8

Guardsquare

Best for: Mobile publishers that need app shielding plus runtime threat monitoring

Visit guardsquare.com

Guardsquare combines two mobile defenses that are often bought separately: hardening the app binary, and monitoring the app at runtime for tampering and threats. Obfuscation and encryption make reverse engineering harder, while runtime checks catch attacks that only appear when the app is running. Together, they give mobile teams a more complete defense than either technique alone.

The limit, as with AppSealing, is that Guardsquare does not protect web applications or APIs. A company with both mobile and web products will need a server side RASP tool as well, and should plan for two budgets and two tuning cycles. Guardsquare fits best where mobile is a major channel and where intellectual property, payment flows, or sensitive data inside the app justify a dedicated mobile security spend. Trial it in a staging build first, since hardening can affect debugging, crash reporting, and app size.