The best free alternative to NetLimiter is Portmaster, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to NetLimiter and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to NetLimiter are simplewall, Fort Firewall, Minimal Firewall and Throttlr.
Free, open-source privacy suite monitoring all network activity, blocking unwanted connections, using trusted filter lists for ads and malware, enforcing DNS-over-TLS, providing custom app and global rules, and supporting advanced privacy management.
Austria
EU
Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.
Kazakhstan
Standalone firewall for Windows 7 and later featuring flexible rules by application, address, or protocol, wildcards, parent process filtering, SvcHost controls, blocklists, bandwidth graphs, traffic stats tracking, speed limits, and real-time network monitoring.
Uzbekistan
Minimal Firewall is a portable Windows firewall frontend that alerts users to internet connections without requiring custom kernel modifications or disabling core isolation, striking a balance between TinyWall's security and SimpleWall's functionality.
United States
Throttlr is a native macOS utility that shows which apps and signed background services are using your network connection, then lets you control their bandwidth individually.
Indonesia
As soon as you’re connected to the Internet, your apps can send whatever they want to wherever they want, unnoticed by you, because all of this happens invisibly under the hood.
AustriaEU
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).
SpainEU
All the functionalities of a modern Next-Gen firewall in few clicks: MultiWAN, Deep Packet Inspection, VPNs, Threat Protection.
ItalyEU
CacheGuard Gateway is a free, open-source network security appliance for startups, growing businesses, and SMEs/SMBs that need enterprise-grade protection without the complexity or cost.
FranceEU
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
appNetworkCounter is a simple tool for Windows that counts and displays the number of TCP/UDP bytes and packets sent and received by every application on your system.
Israel
Speed Limiter application can simulate slow TCP/IP connections. All connections from that machine will go trough this app or you can configure only your application to use it as a proxy.
