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Gufw is an easy, intuitive way to manage your Linux firewall. It supports common tasks such as allowing or blocking pre-configured, common p2p, or individual ports port(s), and many others! Gufw is powered by Uncomplicated Firewall (ufw).

Firewall Builder is Open Source multi-platform firewall management software that supports Linux iptables, FreeBSD ipfilter and ipfw, OpenBSD pf, CIsco PIX and Cisco IOS Access Lists.

HeatShield is a network firewall management service for Linux servers. A firewall configured by HeatShield prevents unauthorized access to services running on your servers, such as SSH and MySQL. Using HeatShield, you can easily restrict access to these services so that only IP addresses you trust are allowed to communicate with your servers.

We thought security products were too complex, difficult to use and inaccessible - so we set out to build the most simple, human and intuitive security product ever made. In other words the kind of security product we want for ourselves.

Firelet is a centralized firewall management tool for small and medium scale environments. It supports Linux-based firewall nodes.

iptablesbuild is effectively a configuration manager for iptables. It is intended to manage iptables configurations in a centralized location for multiple systems.