Best Runtime Application Security Tools in 2026: 8 Tools Compared

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By the Ainotely Editorial Team.
Updated October 2026. 9 min read. Prices and features researched from each vendor's official pages and app store listings at time of writing.
Best Runtime Application Security Tools
Quick picks
  1. 1Contrast Security logo
    Contrast SecurityDedicated in-process protection
    Visit
  2. 2Datadog Application Security logo
    Datadog Application SecurityRuntime security inside observability
    Visit
  3. 3Dynatrace Application Security logo
    Dynatrace Application SecurityRuntime security with app context
    Visit
  4. 4Waratek logo
    WaratekJVM-deep runtime protection
    Visit
  5. 5Jscrambler logo
    JscramblerClient-side JavaScript protection
    Visit
Short version:
In this guide Quick comparisonThe best runtime application security toolsHow we picked theseDeploying runtime protection without breaking productionFrequently asked questionsSources

Quick comparison

ProductIdeal forPrice fromFree version
Contrast SecurityDedicated in-process protectionSee websiteNoVisit
Datadog Application SecurityRuntime security inside observabilitySee websiteFree trialVisit
Dynatrace Application SecurityRuntime security with app contextSee websiteFree trialVisit
WaratekJVM-deep runtime protectionSee websiteNoVisit
JscramblerClient-side JavaScript protectionSee websiteNoVisit
Imperva Application SecurityWAAP with runtime integrationSee websiteNoVisit
Oligo SecurityRuntime application detection and responseSee websiteNoVisit
AppdomeMobile app runtime protectionSee websiteNoVisit

The best runtime application security tools

We compared runtime application security tools on where protection sits, language coverage, blocking versus monitoring, and pricing transparency. Runtime protection differs from firewalls, since it sees inside the running application. Our pick for dedicated protection is Contrast Security, with Datadog as the observability-led alternative.

Contrast Security logo
#1

Contrast Security

Ideal for: Dedicated in-process protection

Contrast Security website
contrastsecurity.com homepage

Contrast Security provides in-process runtime protection with code-level context, letting teams see and block attacks inside the running application. That depth suits organisations protecting critical apps. Pricing is quote-based and deployment needs planning, including monitor-first rollout before blocking.

For most readers, the deciding question with Contrast Security is fit rather than raw feature count. Check the plan limits that matter to you, such as seats, usage caps and what happens when a trial ends, before you commit to a paid tier. If the free tier or trial covers your core task, use it for a full week of real work before paying, and keep an eye on renewal terms and cancellation steps. That short test usually tells you more than any feature list, and it keeps the choice grounded in how you actually work day to day.

The good and the bad
  • In-process runtime protection
  • Vulnerability context
  • Blocking and monitoring
  • Quote-based pricing
  • Deployment takes planning
Datadog Application Security logo
#2

Datadog Application Security

Ideal for: Runtime security inside observability

Datadog Application Security app screenshots
App Store screenshots

Datadog Application Security adds runtime threat detection with trace context inside the Datadog observability platform. Teams already running Datadog gain a coherent view from traces to threats. Pricing is usage-based, and value is highest inside the Datadog ecosystem, so standalone buyers should compare dedicated tools.

For most readers, the deciding question with Datadog Application Security is fit rather than raw feature count. Check the plan limits that matter to you, such as seats, usage caps and what happens when a trial ends, before you commit to a paid tier. If the free tier or trial covers your core task, use it for a full week of real work before paying, and keep an eye on renewal terms and cancellation steps. That short test usually tells you more than any feature list, and it keeps the choice grounded in how you actually work day to day.

The good and the bad
  • Runtime threat detection
  • Trace context
  • Observability integration
  • Usage-based pricing
  • Best inside Datadog ecosystem
Dynatrace Application Security logo
#3

Dynatrace Application Security

Ideal for: Runtime security with app context

Dynatrace Application Security website
dynatrace.com homepage

Dynatrace Application Security provides runtime vulnerability and threat detection with application context and automation. Teams running Dynatrace gain integrated observability and security. Pricing is usage-based and value peaks inside the Dynatrace ecosystem, so check integration depth before buying.

For most readers, the deciding question with Dynatrace Application Security is fit rather than raw feature count. Check the plan limits that matter to you, such as seats, usage caps and what happens when a trial ends, before you commit to a paid tier. If the free tier or trial covers your core task, use it for a full week of real work before paying, and keep an eye on renewal terms and cancellation steps. That short test usually tells you more than any feature list, and it keeps the choice grounded in how you actually work day to day.

The good and the bad
  • Runtime vulnerability and threat detection
  • App context
  • Automation
  • Usage-based pricing
  • Best inside Dynatrace ecosystem
Waratek logo
#4

Waratek

Ideal for: JVM-deep runtime protection

Waratek offers JVM-deep runtime protection for Java applications, including virtual patching without redeployment. That Java depth suits organisations that cannot easily redeploy legacy Java apps. Pricing is quote-based and coverage is Java only, so polyglot estates need additional tools.

For most readers, the deciding question with Waratek is fit rather than raw feature count. Check the plan limits that matter to you, such as seats, usage caps and what happens when a trial ends, before you commit to a paid tier. If the free tier or trial covers your core task, use it for a full week of real work before paying, and keep an eye on renewal terms and cancellation steps. That short test usually tells you more than any feature list, and it keeps the choice grounded in how you actually work day to day.

The good and the bad
  • JVM-level protection
  • Patching without redeploy
  • Java focus
  • Quote-based pricing
  • Java only
Jscrambler logo
#5

Jscrambler

Ideal for: Client-side JavaScript protection

Jscrambler protects JavaScript in the browser with obfuscation, anti-tampering and integrity controls, including payment-page defence relevant to PCI requirements. That client-side focus fills a gap server tools miss. Pricing is quote-based and coverage is client-side only, so pair it with server-side protection.

For most readers, the deciding question with Jscrambler is fit rather than raw feature count. Check the plan limits that matter to you, such as seats, usage caps and what happens when a trial ends, before you commit to a paid tier. If the free tier or trial covers your core task, use it for a full week of real work before paying, and keep an eye on renewal terms and cancellation steps. That short test usually tells you more than any feature list, and it keeps the choice grounded in how you actually work day to day.

The good and the bad
  • JavaScript protection
  • Anti-tampering
  • Payment-page defence
  • Quote-based pricing
  • Client-side only
Imperva Application Security logo
#6

Imperva Application Security

Ideal for: WAAP with runtime integration

Imperva provides web application and API protection with runtime modules and threat intelligence. That breadth suits organisations wanting edge and application layers from one vendor. Pricing is quote-based and breadth can complicate setup, so plan deployment with the vendor.

For most readers, the deciding question with Imperva Application Security is fit rather than raw feature count. Check the plan limits that matter to you, such as seats, usage caps and what happens when a trial ends, before you commit to a paid tier. If the free tier or trial covers your core task, use it for a full week of real work before paying, and keep an eye on renewal terms and cancellation steps. That short test usually tells you more than any feature list, and it keeps the choice grounded in how you actually work day to day.

The good and the bad
  • Web app and API protection
  • Runtime modules
  • Threat intelligence
  • Quote-based pricing
  • Breadth can complicate setup
Oligo Security logo
#7

Oligo Security

Ideal for: Runtime application detection and response

Oligo Security focuses on runtime application detection and response, giving app-layer visibility into running workloads. That ADR focus suits teams wanting runtime depth beyond observability add-ons. Pricing is quote-based and the platform is newer than Contrast, so evaluate maturity during trial.

For most readers, the deciding question with Oligo Security is fit rather than raw feature count. Check the plan limits that matter to you, such as seats, usage caps and what happens when a trial ends, before you commit to a paid tier. If the free tier or trial covers your core task, use it for a full week of real work before paying, and keep an eye on renewal terms and cancellation steps. That short test usually tells you more than any feature list, and it keeps the choice grounded in how you actually work day to day.

The good and the bad
  • Runtime detection
  • App-layer visibility
  • ADR focus
  • Quote-based pricing
  • Newer platform
Appdome logo
#8

Appdome

Ideal for: Mobile app runtime protection

Appdome protects mobile app binaries with anti-fraud, anti-malware and runtime defences, integrated without code changes. That no-code approach suits mobile teams wanting fast protection. Pricing is quote-based and coverage is mobile only, so server and web apps need separate tools.

For most readers, the deciding question with Appdome is fit rather than raw feature count. Check the plan limits that matter to you, such as seats, usage caps and what happens when a trial ends, before you commit to a paid tier. If the free tier or trial covers your core task, use it for a full week of real work before paying, and keep an eye on renewal terms and cancellation steps. That short test usually tells you more than any feature list, and it keeps the choice grounded in how you actually work day to day.

The good and the bad
  • Mobile binary protection
  • Anti-fraud and anti-malware
  • No-code integration
  • Quote-based pricing
  • Mobile only

How we picked these

We compared official feature pages, pricing pages, app store listings, privacy policies and public reviews for each option below. We kept only products that exist and work now, that fit the topic directly, and whose official homepage we could confirm. Where a price was not published clearly, we wrote See website rather than guessing, and we favoured options with a free tier or trial where one exists.

Deploying runtime protection without breaking production

Start in monitor-only mode on one important app. Measure overhead, false positives and alert volume for at least a sprint before enabling blocking. Teams that block globally on day one usually disable the tool within days.

Pair runtime protection with edge controls. A web application firewall absorbs volumetric noise cheaply, leaving the runtime agent to judge requests that deserve code-level scrutiny. One layer does not replace the other.

Budget client-side protection separately. Payment-page script defence and browser integrity are compliance-relevant for many organisations, and they need their own line item rather than being assumed inside a server tool budget.

Frequently asked questions

What are the best runtime application security tools?

Contrast Security leads for dedicated in-process protection, Datadog and Dynatrace suit observability-led teams, and Jscrambler leads for client-side JavaScript protection. Waratek suits Java-only estates.

What is runtime application security?

Runtime application security protects applications while they run, using agents or modules inside the app or browser to detect and block attacks with code-level context. It complements firewalls, which see traffic but not code context.

How much do runtime security tools cost?

Most are quote-based, priced per app, host or usage depending on vendor. Request quotes based on your app count, languages and traffic, and trial in monitor mode before committing.

Should I start runtime protection in blocking mode?

No, start in monitor-only mode, measure overhead and false positives, then enable blocking gradually on routes where evidence supports it. That staged approach avoids production incidents.

Do I need client-side runtime protection?

If you run payment pages or script-heavy web apps, yes, client-side tools such as Jscrambler address threats server tools miss, including script tampering and skimming. PCI requirements make this relevant for many payment flows.

Sources

  1. https://www.contrastsecurity.com
  2. https://www.datadoghq.com
  3. https://www.dynatrace.com
  4. https://www.waratek.com
  5. https://www.jscrambler.com
  6. https://www.imperva.com
  7. https://www.oligo.security
  8. https://www.appdome.com