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Top 2 Free F5 Advanced WAF Alternatives, Compared (2026)

Explore 2 alternatives to F5 Advanced WAF — vetted by our editors with real user reviews, pricing, and feature comparisons.

2 top-rated free F5 Advanced WAF alternatives at a glance

Quick answer

Short on time? The best free alternatives to F5 Advanced WAF are Prophaze and Modshield SB. Prophaze leads with a SpotScore of -1. All 2 are compared on score, rating, and pricing below.

Some teams leave F5 Advanced WAF for the price, others for features or fit. Whatever yours is, these 2 web application firewall (waf) software free alternatives are the picks we'd start with, ranked by SpotScore (real-user satisfaction plus market presence), ratings, and pricing. Editors review each. The table is your quick comparison; the sections below add depth.

ProductSpotScoreRatingPricingBest for
ProphazeStay ahead of cyber threats with Prophaze's advanced protection.—Not yet ratedFreeFree Trial · Quotation Basedteams of all sizes
Modshield SBStay one step ahead of cyber threats.—Not yet ratedFreeFree Trial · Quotation Basedteams of all sizes
Prophaze

Prophaze

Stay ahead of cyber threats with Prophaze's advanced protection.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is Prophaze?

Prophaze is a Web Application Firewall (WAF) built for Kubernetes that provides application-layer security and scales with website traffic. It automates threat detection, delivers real-time visibility into web traffic activity, and reduces incident response time for security events.

Read more about Prophaze
Free Trial·

Prophaze offers custom pricing plan

Modshield SB

Modshield SB

Stay one step ahead of cyber threats.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is Modshield SB?

Modshield SB is a web application firewall that blocks SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF) by intercepting malicious traffic before it reaches the application server. It includes geographic traffic controls for whitelisting or blacklisting by ...

Read more about Modshield SB
Free Trial·

Modshield SB offers custom pricing plan

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Why each made the list

ProphazeBest for teams of all sizes
Modshield SBBest for teams of all sizes

Why teams look for a F5 Advanced WAF alternative

Teams looking past F5 Advanced WAF often cite reasons like these:

  • Complex configuration may require specialized expertise
  • Higher cost compared to basic WAF solutions
  • Resource-intensive deployment for large-scale environments

What to keep in mind choosing a F5 Advanced WAF alternative

The quick comparison across all 2 free alternatives: 2 offer a free tier.

Our ranking method.

Frequently Asked Questions (FAQs)

Stuck on something? We're here to help with all the questions and answers in one place.

The top-rated alternatives to F5 Advanced WAF are Prophaze, Modshield SB. Compare all 2 alternatives side-by-side above.

When evaluating alternatives to F5 Advanced WAF, prioritize: OWASP Top 10 Protection, Bot Mitigation, API Security, DDoS Protection, Compliance Reporting, transparent pricing, free trial availability, and integrations with your existing tools. Use the filters above to compare by feature, budget, and team size.

Migration difficulty depends on how deeply F5 Advanced WAF is integrated into your workflows. Most alternatives offer data export/import tools and dedicated onboarding support. We recommend shortlisting 2–3 options, running a free trial, and checking each vendor's migration guides before committing.

Picking the best F5 Advanced WAF alternative for your team

  • On a budget / just exploring: start with a free tier — Prophaze and Modshield SB let you evaluate without paying upfront.
  • Want the safest pick: Prophaze has the highest Spotsaas Score (-1) in this list — a strong default if you're unsure.

How to switch from F5 Advanced WAF

Switching from F5 Advanced WAF goes smoother with a plan. Start by exporting your data and making sure the new tool imports it cleanly. Confirm the workflows you rely on still work, run a small pilot first, and keep F5 Advanced WAF running until everything's moved. Most options above let you test free before you commit.

Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].