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HAProxy vs Wallarm

HAProxy and Wallarm both land on Depends.

HAProxy

haproxy.org

Depends
Confidence: Medium

A buy for engineering teams running serious traffic who are comfortable with config files and patching.

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Wallarm

wallarm.com

Depends
Confidence: Medium

Buy if you're a security team at an API-heavy mid-size or enterprise company with budget for negotiated contracts.

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HAProxy versus Wallarm
CompareHAProxyWallarm
VerdictDependsDepends
Best forHigh-traffic web infrastructureAPI-heavy product companies
Who it's not forNon-technical teams wanting a dashboardSmall teams with simple apps
PrivacyMature, actively patched open-source project; several CVEs disclosed 2023-2024, including one critical (CVSS 9.1, patched).⁸No known public vulnerabilities found in the sources reviewed.
Support qualityNo support evidence in reviewed sourcesNo direct support reviews found
Public sentimentComparisons and guides consistently describe HAProxy as fast, stable and highly configurable, but aimed at hands-on operators rather than beginners.⁴Reviewers on G2 and Gartner generally praise reliability and detection, while comparison sites repeatedly flag high pricing.
Biggest gotchaMultiple HTTP request-smuggling CVEs disclosed 2023-2024; patch promptly⁹Pricing is quote-based; reviewers report high costs and unpredictable quotes14

Pick HAProxy when

  • High-traffic web infrastructure
  • Teams with in-house ops skills
  • TCP and database load balancing
  • Cost-sensitive scaling

When HAProxy is not a fit

  • Non-technical teams wanting a dashboard
  • Anyone wanting a fully managed cloud LB
  • Small sites with one server . use your host's balancer
  • Teams that won't track security patches

Pick Wallarm when

  • API-heavy product companies
  • Security teams replacing legacy WAFs
  • Enterprises securing AI workloads and agents
  • Dev, Sec, and Ops platform teams

When Wallarm is not a fit

  • Small teams with simple apps
  • Startups without dedicated security staff
  • Budget-constrained buyers wanting flat, predictable pricing
  • Anyone needing only self-serve, basic WAF coverage

Sources

  1. HAProxy official sitehaproxy.org
    official
  2. HAProxy Load Balancer Configuration Basicshaproxy.com
    official
  3. What Is HAProxy? A Practical Guide to L4/L7 Load Balancinglogicmonitor.com
    review
  4. Traefik vs HAProxy: Which Load Balancer Reigns Supreme?wallarm.com
    review
  5. 11 Top Load Balancers for 2026xurrent.com
    review
  6. Envoy vs HAProxy: Which Proxy Server Is Right for Your Teamlast9.io
    review
  7. How to Use HAProxy for Load Balancingakamai.com
    review
  8. CVE-2023-25725: CRITICAL (CVSS 9.1) · Patchedechelongraph.io
    security
  9. HAProxy vulnerable to HTTP request/response smuggling (3.0.3)jvn.jp
    security
  10. HAProxy, powering today's applications . High Scalabilityhighscalability.com
    news
  11. Wallarm on G2 . 97 reviewsg2.com
    review
  12. Wallarm Cloud-Native WAAP Reviews . Gartnergartner.com
    review
  13. Traceable AI vs Wallarm . RFP.wikirfp.wiki
    review
  14. Imperva vs Wallarm . RFP.wikirfp.wiki
    review
  15. Wallarm cost data . Vendrvendr.com
    review
  16. Wallarm on AWS Marketplaceaws.amazon.com
    official