Apps similar to Portmaster include NextDNS, which is open source with a free version. Other options are AdGuard, Pi-hole, simplewall and RethinkDNS. You're spoiled for choice with Firewalls like Portmaster: we list more than 25 alternatives for Windows, Linux, Android, Mac and iPhone.
SterJo NetStalker is innovative and FREE security software able to detect all authorized and unauthorized connections to your computer and send you alert for each new connection.
North Macedonia
China
Karma Firewall app lets you take control back of your phone and block internet traffic to and from specific apps. This is a simple yet powerful firewall with an easy to use intuitive GUI which allows you to protect your sensitive data.
Free adblocker, anonymity, traffic and battery saver, firewall, and Internet speed increase.
Japan
NetworkTuna helps you detect and investigate suspicious network activity around your Windows PC. It looks for port scans and repeated attempts from nearby devices to reach services on your computer. Optional router monitoring checks for changes to your router's management...
Czechia
EU
Perfects the Windows Firewall offering additional security. Get the most out of your Windows firewall, create new security rules for your online applications, alerts you to anomalies with real-time protection.
GermanyEU
Bouncer is an application to help you choose the correct firewall zone for wireless connections. When you connect to a new network, Bouncer will open a window prompting you for what kind of network (eg home, public, work) it is.
NetGenius is a modern Internet connection monitoring, control and optimization tool. It lets you watch the apps using your Internet in real-time, control their access, and get detailed usage reports. Bandwidth-sensitive applications like voice calls, videos or games can be...
Australia
Block unwanted ads for faster browsing with Total Adblock. Remove banners, pop-ups, and video ads. SAVETIME by decreasing data usage and improving privacy while prolonging battery life. Easy iOS setup requires a paid account, offering custom filters and an Allow list for trusted sites.
United Kingdom
