mkcert vs Nessus: Which Should You Choose in 2026?
Choosing between mkcert and Nessus comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
mkcert
Create local trusted dev certificates
Best for you if:
- • You want the higher-rated option (8.5/10 vs 8.4/10)
- • You need something completely free
Nessus
Vulnerability assessment scanner
Best for you if:
| At a Glance | ||
|---|---|---|
Price | Free | Paid |
Best For | Security | Security |
Rating | 85/100 | 84/100 |
| Feature | mkcert | Nessus |
|---|---|---|
| Pricing Model | Free | Paid |
| Editorial Score | 85 | 84 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Security | Security |
Understanding the Differences
Both mkcert and Nessus solve similar problems, but they approach them differently.mkcert positions itself as "create local trusted dev certificates" while Nessusfocuses on "vulnerability assessment scanner". These differences matter depending on what you're trying to accomplish.
When to Choose mkcert
mkcert makes sense if you're looking for a completely free solution. With a score of 85/100, it's our top pick in this comparison.
When to Choose Nessus
Nessus is worth considering if you need a professional-grade tool.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, mkcert lets you get started without pulling out your credit card.
We'd pick: mkcert
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. mkcert handles scale better in our testing.
We'd pick: mkcert
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Nessus takes enterprise seriously.
We'd pick: Nessus
Still not sure? Answer these 3 questions
How much can you spend?
Nothing at all? mkcert is completely free.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated mkcert higher (85/100). But the community has upvoted Nessus more (0 votes). Pick your source of truth.
Key Takeaways
What mkcert Does Better
- Higher overall score (85/100)
- Our recommendation for most use cases
Consider Nessus If
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with mkcert (85/100). But the honest answer is that "better" depends on your situation. mkcert scores higher in our analysis, but Nessus might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is mkcert or Nessus better?
Based on our analysis, mkcert scores higher with 85/100. mkcert isfree while Nessus is paid. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from mkcert to Nessus easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do mkcert and Nessus offer free trials?
Most software in this category offers free trials or free tiers. mkcert is completely free.Nessus is paid with potential trial. Visit their websites for current trial offers.