Best Semrush Alternatives in 2026 (For Website Security & Audits)
Semrush is the gold standard for SEO professionals - but it's expensive, complex, and focused on marketing, not security. Here are the best alternatives for website audits in 2026.
Run the same check right now — free
Enter your domain and get a 9-point audit — DNS, SPF/DKIM/DMARC, SSL, security headers, dark-web exposure — in 60 seconds.
No signup · <60s · GDPR/EU processing
Why Look for a Semrush Alternative?
Semrush is genuinely powerful. If you're a digital marketing agency managing keyword rankings, backlink profiles, and competitor analysis, it's hard to beat. But for many website owners, it's overkill - and overpriced.
Common frustrations that drive people to search for alternatives:
- Price: Semrush starts at $139.95/month. That's steep if you just want to audit your website.
- Complexity: The platform has 50+ tools. Finding what you need takes time.
- Security blind spots: Semrush focuses on SEO. It won't tell you about your SSL expiry, GDPR compliance gaps, or dark web leaks.
- Wrong tool for the job: If you need a security audit, you don't need keyword rankings.
What Semrush Actually Does Well
Before comparing, let's be honest about Semrush's strengths:
- Keyword research - world-class database
- Backlink analysis - large, frequently updated index
- Technical SEO audit - crawls your site for broken links, redirect issues, crawlability
- Competitive intelligence - see what competitors rank for
- Content marketing tools
What it doesn't cover:
- SSL certificate health
- Security headers
- DNS configuration
- Dark web monitoring
- GDPR / NIS2 compliance posture
- JavaScript secret exposure
- Real-time security monitoring
Top Semrush Alternatives in 2026
1. FortifyNet ⭐ (Best for Technical Security Audits)
If the reason you're considering Semrush is to run website audits - not rank keywords - then FortifyNet is built exactly for that use case.
What it does:
- Full technical website audit (SSL, DNS, security headers, performance, compliance)
- Continuous monitoring with automated alerts when issues are detected
- Dark web leak monitoring for your domain and company emails
- GDPR and NIS2 compliance scoring
- Exposure scan (JavaScript secrets, exposed files, cloud bucket leaks)
- Multi-domain management for agencies
Pros: ✅ Purpose-built for security audits, not SEO keyword fluff ✅ Actionable recommendations with severity ratings ✅ Continuous monitoring - not just a point-in-time snapshot ✅ Affordable: starts at free trial, paid plans significantly cheaper than Semrush ✅ Covers what Semrush misses: SSL, headers, dark web, GDPR ✅ Clean UI - no 50-tool overwhelm ✅ Ideal for agencies managing multiple client websites
Cons: ❌ No keyword research or backlink analysis ❌ Not an SEO content marketing tool ❌ Newer platform than Semrush
Verdict: If your goal is "I want to know everything wrong with my website from a security and technical perspective," FortifyNet wins outright. Start your free audit →
2. Ahrefs
Ahrefs is arguably Semrush's closest competitor - focused on backlinks and keyword research.
Pros: ✅ Excellent backlink index (some say better than Semrush) ✅ Good keyword explorer ✅ Site audit tool for technical SEO ✅ Slightly cheaper than Semrush ($129/month)
Cons: ❌ Still expensive for non-SEO professionals ❌ Zero security features (no SSL, headers, dark web) ❌ Not built for non-marketers ❌ Limited free tier
3. Moz Pro
Moz was one of the original SEO tools and still holds its own for domain authority tracking.
Pros: ✅ Good Domain Authority (DA) metric widely used in industry ✅ Solid site crawl for technical SEO issues ✅ More approachable than Semrush/Ahrefs for beginners
Cons: ❌ Smaller keyword/backlink database than Semrush ❌ No security features ❌ Pricing similar to competitors
4. Screaming Frog SEO Spider
A technical SEO crawler loved by developers and SEO specialists.
Pros: ✅ Very detailed technical crawl ✅ Free up to 500 URLs ✅ Runs locally - fast
Cons: ❌ Desktop software, not cloud-based ❌ No monitoring or alerting ❌ No security, SSL, or compliance features ❌ Requires technical knowledge to interpret
5. Ubersuggest (Neil Patel)
Pros: ✅ Much more affordable ✅ Good for beginners ✅ Lifetime deal available
Cons: ❌ Smaller data sets than Semrush/Ahrefs ❌ Limited technical SEO depth ❌ No security features
Feature Comparison Table
| Feature | FortifyNet | Semrush | Ahrefs | Moz Pro | Screaming Frog |
|---|---|---|---|---|---|
| SSL analysis | ✅ | ❌ | ❌ | ❌ | ❌ |
| DNS audit | ✅ | ❌ | ❌ | ❌ | ❌ |
| Security headers | ✅ | ❌ | ❌ | ❌ | ❌ |
| Dark web monitoring | ✅ | ❌ | ❌ | ❌ | ❌ |
| GDPR compliance | ✅ | ❌ | ❌ | ❌ | ❌ |
| Technical SEO audit | ✅ | ✅ | ✅ | ✅ | ✅ |
| Keyword research | ❌ | ✅ | ✅ | ✅ | ❌ |
| Backlink analysis | ❌ | ✅ | ✅ | ✅ | ❌ |
| Continuous monitoring | ✅ | ❌ | ❌ | ❌ | ❌ |
| Price | Free trial / low | $139.95/mo | $129/mo | $99/mo | Free / £259/yr |
The Real Difference: SEO vs. Security Audits
Semrush is built for marketers. FortifyNet is built for website owners who want to know their site is safe, fast, and compliant.
These are genuinely different needs:
Use Semrush (or Ahrefs) if you:
- Are an SEO professional or agency
- Need keyword ranking data
- Manage backlink outreach campaigns
- Compete in content marketing
Use FortifyNet if you:
- Want to audit your website's security posture
- Need to verify SSL, DNS, and security headers are correct
- Must demonstrate GDPR/NIS2 compliance to clients or auditors
- Want continuous monitoring instead of periodic manual checks
- Manage multiple client websites and need one dashboard
Many teams actually use both - Semrush for SEO, FortifyNet for security. And since FortifyNet is significantly cheaper, the combined cost is often less than Semrush alone.
FAQ
How much does Semrush cost?
Semrush starts at $139.95/month for the Pro plan. Business plans can exceed $449/month. Annual billing offers a discount.
What is the best free Semrush alternative?
For technical website audits, FortifyNet's free trial is the most comprehensive option covering security, performance, DNS, and SSL. Screaming Frog offers a free tier for up to 500 URLs if you specifically need a technical SEO crawl.
Can FortifyNet replace Semrush?
For security audits, yes. For SEO keyword research and backlink analysis, no - they serve different purposes. FortifyNet covers the security blind spots that Semrush leaves entirely open.
Does Semrush check SSL certificates?
No. Semrush's site audit checks technical SEO factors like broken links and missing meta tags. It does not audit SSL certificates, HSTS configuration, or security headers.
Is FortifyNet good for agencies?
Yes. FortifyNet supports multi-domain management, making it ideal for agencies managing security and performance for multiple client websites simultaneously.
What technical SEO issues does FortifyNet check?
FortifyNet checks performance (Core Web Vitals via PageSpeed API), DNS configuration, SSL/TLS settings, security headers (CSP, HSTS, X-Frame-Options, etc.), server exposure, and compliance indicators - all the technical foundations that affect both security and SEO.
Try FortifyNet free → | See all features → | Compare plans →
