NetLimiter 4.0.32 is a software tool that allows users to monitor and control their network traffic. It provides real-time monitoring of network activity and allows users to set limits on the upload and download speed of individual applications or processes. NetLimiter also offers a firewall feature that allows users to block or allow incoming and outgoing connections based on specific IP addresses or protocols. Additionally, it has a scheduler to automate tasks and a remote administration feature for managing multiple computers from a single location.