Best Free Perimeter 81 Alternatives — 12 Tools Compared in 2026

What is Pritunl?

Pritunl is an open-source VPN platform for IT administrators and DevOps teams who need remote access and site-to-site connections at lower cost than commercial alternatives. Initial setup requires command-line configuration and manual certificate generation, so it is not suitable for teams ...

What is Twingate?

Twingate is the perfect security platform for both individual professionals and businesses. Its cloud-based service allows for the easy configuration and central management of user access. It ensures maximum protection of your network from malicious attacks and makes maintenance hassle-free. It ...

What is Qualified?

Qualified leverages the current website of companies to identify leads and get the best return on investment. This comprehensive developer assessment helps start meaningful sales conversation, convert outbound and digital adverts, and further analyse clues of buying intent. This software helps ...

What is Check Point Endpoint Security?

Check Point Endpoint Security offers a unified solution that combines data security, network security, advanced threat prevention technologies, and remote access VPN into a single package. Designed to deliver comprehensive protection for both Windows and Mac OS X environments, this solution ...

What is ALTCHA?

ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other solutions, ALTCHA is free, open-source, and self-hosted, without external services, does not use cookies nor fingerprinting, does not track users, and is fully ...

What is CookieChimp?

Discover CookieChimp, the cutting-edge solution for modern website cookie consent management. With the tagline "Modern Website Cookie Consent," CookieChimp is your go-to AI-driven platform for seamlessly handling all things cookie-related, tailored specifically for professionals. By leveraging ...

What is NetFUNNEL?

NetFUNNEL is a traffic management solution that protects websites from crashes during high-volume traffic events by queuing visitors and managing server load. Administrators can configure resource utilization settings and monitor access patterns to prevent server overload during peak periods.

What is Campaign Cleaner?

Campaign Cleaner is an email deliverability tool that scans emails for spam triggers, broken links, and suspicious phrases before they are sent. Its algorithm analyzes content and flags elements that could cause spam filters to intercept the message, then suggests adjustments. It is designed ...

What is SimpleDMARC?

SimpleDMARC is a DMARC monitoring tool that organizes email authentication data into four views: DMARC-Capable, Forwarding, Non-compliant, and Threat. The source viewer identifies all domains and IP addresses sending email from your domain, covering both senders and recipients. Users can ...

What is SpamTitan?

Protecting your organization's email communications is paramount in today's cybersecurity landscape. Introducing SpamTitan, the ultimate solution for email security, email protection, and email filtering. With a focus on safeguarding against phishing attacks, malware, spam, viruses, and other ...

What is Web3 Antivirus?

Web3 Antivirus (formerly W3A) is a Chrome browser extension that uses machine learning and human review to detect scams, fraudulent transactions, and risky assets in Web3 environments. It analyzes transactions before signing and provides risk warnings to help users avoid wallet-draining schemes ...

What is IRONSCALES?

IRONSCALES is an AI-based email security platform that detects and responds to phishing, Business Email Compromise (BEC), and Account Takeover (ATO) attacks. Developed by a team with backgrounds in the Israel Defense Forces Intelligence Technology unit, the platform deploys quickly and ...