Top Alternatives to NetLimiter

Little Snitch is an essential network monitoring and firewall tool for macOS. It provides granular control over your Mac's network connections, alerting you whenever an application attempts to connect to the internet and allowing you to decide whether to permit or deny the connection.

NetBalancer is a robust Windows network traffic control and monitoring application. It allows users to manage network bandwidth usage by individual applications, prioritize traffic, and monitor network activity in real-time. It's designed for users who need granular control over their internet connection.

Simplewall is a robust and lightweight firewall application for Windows, designed to control and monitor network activity for applications. It leverages the Windows Filtering Platform (WFP) to provide granular control over outbound connections, enhancing privacy and security by allowing users to block unwanted network communication.

Gufw is an intuitive graphical frontend for the Uncomplicated Firewall (UFW), providing a user-friendly way to manage iptables. It simplifies firewall configuration for Linux users, allowing control over network traffic and application access with ease.