pfSense is a free, open source customized distribution of FreeBSD tailored for use as a firewall, and router. In addition to being a powerful, flexible firewalling and routing platform, it includes a long list of related features and a package...
- - pfSense is the most popular Open Source & free alternative to ZeroShell.
OPNsense includes most of the features available in expensive commercial firewalls, and more in many cases. It brings the rich feature set of commercial offerings with the benefits of open and verifiable sources.
- - OPNsense is the most popular Self-Hosted alternative to ZeroShell.
IPCop Firewall is a Linux firewall distribution geared towards home and SOHO (Small Office/Home Office) users. The IPCop interface is very user-friendly and task-based. IPCop offers the critical functionality of an expensive network appliance using stock, or even obsolete...
- - IPCop is the most popular Linux alternative to ZeroShell.
The project seems to be no longer updated. Last version, 2.1.9, released in February 2015, can be still downloaded from the official website.
The SmoothWall Open Source Project was set up to develop and maintain SmoothWall Express - a Free firewall that includes its own security-hardened GNU/Linux operating system and an easy-to-use web interface.Discontinued
The site says the last release was October 2014.
Protect your network from viruses, malware and malicious activity with Kerio Control, the easy-to-administer yet powerful all-in-one security solution.
- - Kerio Control is the most popular commercial alternative to ZeroShell.
DynFi® Firewall is the first French Open Source firewall. The system integrates many filtering features and allows for the first time to manage a large number of your appliances. Available for free, DynFi Firewall has two images (with VGA or Serial return) compatible with...
DynFi Firewall Features
RusRoute is a router and firewall, Internet gateway for Windows, it is the ideal solution for making Internet gateway for local area network (LAN) of any firm, the users' traffic encountering and restricting, protection against of network attacks with functions of NAT...
- - Rusroute is the most popular Windows alternative to ZeroShell.
- Is this is a good alternative?YesNo12 Forefront Threat Management Gateway alternatives
- Paid • Proprietary
Microsoft Forefront Threat Management Gateway (Forefront TMG), formerly known as Microsoft Internet Security and Acceleration Server (ISA Server), is a network security and protection solution for Microsoft Windows, described by Microsoft as "enables businesses by allowing...
Forefront Threat Management Gateway Features
Vilfo OS is an easy and powerful software enabling multiple simultaneous connections to VPN servers. It contains firewall, split tunneling, DNS leak protection, VPN killswitch, notifications and much more.