19.4
OPNsense is an open-source firewall and routing platform based on FreeBSD, for self-hosted, web, and API use.
Free planOpen sourceAndroidiOSWeb
Best Firewall Software in 2026
Firewall software filters network traffic by applying rules to connections. This category includes cloud services, self-hosted systems and tools managed through web, desktop or API interfaces. Compare outbound control, rule direction, connection alerts, application rules and central management.
29.0
CrowdSec is an open-source security stack designed to detect and block malicious IP addresses to help safeguard infrastructure and applications.
Free planOpen sourceiOSWebAPI
38.7
IPFire is a free, open-source firewall and security platform for networks, from home offices to large enterprises.
Free planOpen sourceWebAPILinux
- 4
Comodo Internet Security
Comodo Internet Security is a Windows security suite combining antivirus protection, a packet-filtering firewall, host intrusion prevention, and…
AndroidiOSExtensionWindows8.6 - 5
GlassWire
GlassWire is a network traffic monitor and personal firewall for viewing network activity and controlling app connections.
Free planAndroidWebWindows8.4From $2.99 a month - 6
NethSecurity
NethSecurity is an OpenWrt-based unified threat management solution designed for small and medium-sized businesses.
Free planOpen sourceWebAPILinuxSelf-hosted8.4From €150 a year - 7
Arista NG Firewall
Arista NG Firewall is network security software for managing and protecting traffic in hybrid deployments.
Free planWeb8.3Free plan - 8
OpenWrt
OpenWrt is a Linux operating system for embedded devices, most often wireless routers.
Free planOpen sourceAndroidWebAPILinux8.2Free plan - 9
ManageEngine Firewall Analyzer
ManageEngine Firewall Analyzer analyzes firewall rules and provides traffic, bandwidth, security, and network reporting.
AndroidiOSWebAPI7.9From $395 a year - 10
Google Cloud NGFW
Free planWebAPI7.7Free plan - 11
NetBalancer
NetBalancer monitors computer network traffic and lets users control it with process priorities, limits, and rules.
Free planWebAPIWindows7.7$34.95 one-time - 12
Portmaster
Free planLinuxmacOSWindows7.6From €40 a year - 13
TNSR
TNSR is Linux software acting as a terabit router and VPN concentrator for high-speed routing and VPN workloads.
Free planAPILinuxSelf-hosted7.6Free plan - 14
RethinkDNS
RethinkDNS combines a configurable DNS resolver with an Android firewall to block ads, trackers, malware, and other selected domains.
Free planAndroidWeb7.5From $1.75 a month - 15
Murus
Free planmacOS7.4Free plan - 16
ClearOS
Free planLinuxSelf-hosted7.3Free plan - 17
OpenSnitch
Free planOpen sourceLinuxSelf-hosted7.3Free plan - 18
WatchGuard AuthPoint
WatchGuard AuthPoint is a cloud-based multi-factor authentication service that verifies users before they access computers, VPNs, cloud services, and applications.
AndroidiOSWebAPI7.3 - 19
FireMon
FireMon helps organizations manage and analyze security policy across multi-vendor firewalls, cloud networks, and microsegmentation environments.
WebAPILinuxSelf-hosted7.2From $200 a month - 20
Alibaba Cloud Cloud Firewall
Alibaba Cloud Cloud Firewall is a cloud-native firewall service for filtering traffic, intrusion prevention, and threat detection.
WebAPI7.1From $420 a month - 21
AFWall+
Free planAndroid7.1$9.99 one-time - 22
Oracle Cloud Infrastructure Secret Management
Oracle Cloud Infrastructure Secret Management stores, retrieves, rotates and manages credentials used by applications and cloud environments.
Free planWebAPI7.1Free plan - 23
Launchpad
Launchpad is a free collaboration platform for open-source projects and community contributors, with tools to build and publish software.
Free planWebAPILinuxSelf-hosted7.1Free plan - 24
VyOS
VyOS is an open-source networking operating system for bare-metal, virtualized, cloud, and edge deployments.
APILinuxSelf-hosted7.0 - 25
FortiGate
Self-hosted6.9
Choosing well
Check where it runs
The listed platform options include self-hosted, web, Linux, API, Windows and macOS. Match the deployment model to the device or service you plan to protect.
Compare free and paid plans
Firewall products in this category offer free plans, freemium pricing, paid plans and free trials. Check the Free plan and Paid from fields together.
Published pricing ranges from free plans to paid offers, while some products show pricing on request.
Review traffic controls
Compare outbound control and rule direction to see how traffic policies can be set. Connection alerts can help you notice network events.
Application rules are another comparison point when policies need to target particular software.
Plan for administration
Central management matters when firewall settings need to be handled from one place. Check whether the product provides the management approach your setup requires.
Cloud services and self-hosted tools can have different operating models, so compare the listed platforms before committing.
Check code access
Open-source code is offered by products in this category. If reading or changing the code matters, check the licence for the tool you are considering.
Questions people ask
Can I find a free firewall plan?
Yes. Free plans and freemium options are represented in this category. Check the Free plan and Paid from fields for the product you are considering.
Which controls should I compare?
Compare outbound control, rule direction, connection alerts and application rules. These fields describe how traffic policies and notifications are handled.
Are open-source options available?
Open-source code is offered by products in this category. Review the licence if you need to inspect or modify the code.
What platforms do these tools support?
The supplied entries list self-hosted, web, Linux, API, Windows and macOS platforms. Confirm the exact platform support for your chosen product.