Top 10 Perimeter 81 Alternatives 2026
Secure your workforce, simplify your security.
Trusted by 2M+ software buyers annually.
Main Features
- Access Control
- Capacity Analytics
- Compliance Tracking
- Data Security
Pricing
Starts from $8/User/Month when Billed Yearly
Free Trial available
Perimeter 81 is a Website Security Software platform. Teams looking for alternatives typically need better pricing flexibility, easier deployment, or a closer feature fit for their specific use case. Below you'll find 10 vetted Website Security Software alternatives ranked by user rating, with filters to narrow by pricing, platform, and features — so you can find the right fit for 2026.
Perimeter 81 vs Top Alternatives at a Glance
Side-by-side comparison of pricing, user rating, and free trial availability to help you decide faster.
| Tool | Best For | Pricing | Rating | Free Option |
|---|---|---|---|---|
| Perimeter 81 Current | Website Security Software | $8 | No reviews | ✓ Yes |
 Avanan | Website Security Software | Free trial | 4.8 ★ | ✓ Yes |
 SiteLock | Website Security Software | Free trial | 4.5 ★ | ✓ Yes |
 Virusdie | Website Security Software | Free trial | 4.8 ★ | ✓ Yes |
 Intruder | Website Security Software | Free trial | 4.9 ★ | ✓ Yes |
 Sysdig Secure | Website Security Software | Free trial | 4.8 ★ | ✓ Yes |
Showing 1-10 out of 10
List of the Top Perimeter 81 alternatives as of November 2026
Compare business software, products, and services to find the best solution for your business or organization. Use the filters on the left to drill down by category, pricing, features, market segment, user ratings, and more.
Avanan — 4.8★
Protect your cloud communications with advanced security technology.
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What is Avanan?
Avanan secures cloud email and collaboration platforms against phishing, malware, and ransomware using multi-layer AI-based detection. It scans cloud apps including Slack, Microsoft Teams, OneDrive, and Box, and provides security administrators with forensic reports covering network activities, ...
Read moreCommon Features
-
Threat Protection
-
Data Security
Unique Features
-
Machine Learning
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Reporting
-
Security Management
+ 1 more
Pricing
Free Trial available
Avanan offers custom pricing plan
SiteLock — 4.45★
Secure your website with the power of SiteLock.
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What is SiteLock?
SiteLock offers top-notch cybersecurity solutions for businesses of all sizes. Our cutting-edge technology is designed to keep your website safe and secure, with advanced vulnerability detection and automatic malware removal. From WordPress database scanning to core CMS vulnerability patching, ...
Read moreWhat reviewers like about SiteLock
- Exceptional customer service from representatives like Danielle, Crystal, Eric, and others.
- Knowledgeable and patient support staff who provide thorough explanations and guidance.
- Quick turnaround time in resolving issues and offering solutions.
Where SiteLock falls short
- Some customers faced difficulties in resolving malware issues despite paying for services.
- Complaints about poor service quality, with sites remaining down or experiencing repeated malware threats.
- Challenges in canceling subscriptions, with customers feeling scammed and facing high cancellation fees.
Common Features
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Threat Protection
-
Security Testing
Unique Features
-
Monitoring
-
Compliance Management
-
Security Management
Pricing
Free Trial available
SiteLock offers custom pricing plan
Spotsaas Buyer Intelligence
Own the software buyers are comparing here? See who's weighing you against rivals — and who's comparing your competitors while you're not in the running.
Virusdie — 4.8★
Secure your website, protect your business.
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What is Virusdie?
Virusdie is a comprehensive website anti-hacker security software available on the Internet today. It protects inbound hacker attacks, blocks malware, and even works with the web hosting to help protect user's site from bad traffic. Virusdie can also work with large companies needing website ...
Read moreWhat reviewers like about Virusdie
- Comprehensive security
- Blocks malware
- Works with web hosting
Where Virusdie falls short
- Limited support for small businesses
- Can be complex to configure
- Pricing may be high for some
Common Features
-
Threat Protection
Unique Features
-
Security Management
-
Monitoring
-
Dashboard
+ 1 more
Pricing
Free Trial available, Try Now
Intruder — 4.9★
Easily safeguard your systems from unwelcome threats.
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What is Intruder?
Meet Intruder, the ultimate solution for effortless vulnerability scanning. With the tagline "An Effortless Vulnerability Scanner," Intruder lives up to its name by providing top-notch cyber security protection without any hassles. Gone are the days of costly data breaches and security ...
Read moreCommon Features
-
Security Testing
Unique Features
-
Network Scanning
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Vulnerability Prioritization
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Monitoring
+ 2 more
Pricing
Free Trial available
Intruder offers custom pricing plan
Sysdig Secure — 4.8★
Protect your cloud and containers with confidence.
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What is Sysdig Secure?
Sysdig Secure is a powerful cloud and container security platform that provides an intelligent architecture for monitoring, security, and forensics integrated with Docker and Kubernetes. With a unified platform, users can gain a better understanding of security across their cloud, containers, ...
Read moreWhat reviewers like about Sysdig Secure
- Comprehensive security monitoring
- Integrated with Docker and Kubernetes
- User-friendly interface
Where Sysdig Secure falls short
- May require technical expertise
- Limited to cloud and container security
- Subscription costs may apply
Common Features
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Data Security
Unique Features
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Policy Management
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Monitoring
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Network Scanning
+ 2 more
Pricing
Free Trial available
Sysdig Secure offers custom pricing plan
PowerDMARC — from $8.00 · 5★
Securing your business one email at a time.
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What is PowerDMARC?
Introducing PowerDMARC, the ultimate email domain protection tool designed to safeguard businesses from potential threats such as business email compromise (BEC), spoofing, and sophisticated phishing attacks. This innovative platform provides real-time alerts to effectively combat spoofing ...
Read moreCommon Features
-
Threat Protection
Unique Features
-
Monitoring
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Alert Notifications
-
Reporting
+ 2 more
Pricing
Free Trial available, Try Now
Starts from $8.00/month when Billed Yearly, also offers free forever plan
Acunetix — 4.1★
Stay secure online with reliable vulnerability testing.
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What is Acunetix?
Acunetix Web Vulnerability Scanner is a tool that tests websites and web applications in order to find out if they are vulnerable to attacks in real time. It tests for SQL Injections, XSS vulnerabilities and many more. Acunetix is 100% accurate detection of security vulnerabilities on websites, ...
Read moreWhat reviewers like about Acunetix
- Accurate vulnerability detection
- Real-time scanning
- Comprehensive reporting
Where Acunetix falls short
- Can be expensive for small businesses
- Requires technical knowledge
- Limited support options
Common Features
-
Security Testing
Unique Features
-
Vulnerability Prioritization
-
Reports
-
Dashboard
+ 2 more
Pricing
Acunetix offers custom pricing plan
WP Rocket — from $34.30 · 4.77★
Rocket your website's speed and performance!
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What is WP Rocket?
WP Rocket is designed to help website owners reduce page loading time, enhance page speed scores, and optimise Core Web Vitals. Installing this plugin is a breeze, taking only 3 minutes with no technical experience or coding knowledge required. WP Rocket offers both basic and advanced features ...
Read moreWhat reviewers like about WP Rocket
- Improves page loading speed
- Easy installation
- Advanced optimization features
Where WP Rocket falls short
- Limited to WordPress sites
- May conflict with other plugins
- Requires ongoing updates
Common Features
No common features
Unique Features
-
Plugin Support
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Cache Purging
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Compression Option
+ 3 more
Pricing
Starts from $34.301 year License
CrowdStrike Falcon Endpoint Protection — from $60 · 4.7★
Unleash the power of unbeatable endpoint protection.
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What is CrowdStrike Falcon Endpoint Protection?
CrowdStrike Falcon Endpoint Protection is a cloud-native security platform designed to help IT and security teams protect devices and data from modern cyber threats. Built for organizations of all sizes, including enterprises, government agencies, and regulated industries, Falcon delivers ...
Read moreWhat reviewers like about CrowdStrike Falcon Endpoint Protection
- Falcon excels at defending against not only malware but also fileless attacks, lateral movement, and credential-based intrusions, making it highly effective against advanced persistent threats.
- The lightweight agent can be deployed across multiple operating systems in minutes, requiring minimal configuration and little to no performance degradation.
- Backed by global adversary intelligence, Falcon constantly updates its detection logic, helping organizations stay ahead of evolving threats.
Where CrowdStrike Falcon Endpoint Protection falls short
- The feature set comes with a premium price tag, which may not be feasible for startups or smaller organizations with limited security budgets.
- Falcon's extensive capabilities and analytics-driven interface may require training or experience to fully utilize, especially for teams unfamiliar with enterprise-grade tools.
- Because Falcon heavily relies on cloud-based intelligence and data correlation, its offline or air-gapped performance may be restricted compared to locally managed alternatives.
Common Features
No common features
Unique Features
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Threat Intelligence
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Device Control
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Endpoint Access
+ 2 more
Pricing
Free Trial available, Try Now
Starts from $60/device when yearly
Human Presence — from $49 · 5★
Eliminate bots and spam with ease.
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What is Human Presence?
Human Presence is a bot detection and spam protection tool for Shopify and WordPress that requires no coding to set up. It blocks robotic checkouts and form spam without adding friction to the user experience. The tool runs in the background and is built specifically for e-commerce and CMS ...
Read moreWhat reviewers like about Human Presence
- No coding required
- Effective spam protection
- User-friendly interface
Where Human Presence falls short
- Limited to spam and bot protection
- May not cover all security aspects
- Potential false positives
Common Features
No common features
Unique Features
-
Spam Blocking
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eCommerce
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Plugin Support
+ 1 more
Pricing
Starts from $49, also offers free forever plan
Who competes with Perimeter 81?
Across Website Security Software, 10 products compete directly with Perimeter 81. The strongest overlap is with Avanan, SiteLock and Virusdie. Each is compared against Perimeter 81 on rating, pricing and feature coverage below.
Tools similar to Perimeter 81
Searches for "sites like Perimeter 81" and "apps like Perimeter 81" land on the same set of options as "Perimeter 81 alternatives" — the 10 options below cover both, whether you want a like-for-like replacement or something lighter.
Why we picked these Perimeter 81 alternatives
Exceptional customer service from representatives like Danielle, Crystal, Eric, and others.
Watch for: Some customers faced difficulties in resolving malware issues despite paying for services.
Comprehensive security
Watch for: Limited support for small businesses
Comprehensive security monitoring
Watch for: May require technical expertise
Accurate vulnerability detection
Watch for: Can be expensive for small businesses
Improves page loading speed
Watch for: Limited to WordPress sites
Falcon excels at defending against not only malware but also fileless attacks, lateral movement, and credential-based intrusions, making it highly effective against advanced persistent threats.
Watch for: The feature set comes with a premium price tag, which may not be feasible for startups or smaller organizations with limited security budgets.
No coding required
Watch for: Limited to spam and bot protection
Why teams look for a Perimeter 81 alternative
When teams go looking for a Perimeter 81 alternative, it's often because of issues like these:
- Initial setup and choosing the right gateway locations can be confusing for some users.
- Sign-off from external networks requiring a code feels cumbersome to a few reviewers.
The factors that matter in a Perimeter 81 alternative
Here's what the data says about these 10 website security software alternatives: 8 offer a free tier; and Human Presence is the highest rated at 5★ across 1 reviews.
How the ranking holds up.
Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
