Apps similar to TCP Viewer include Wireshark, which is free and open source. Other options are PortKiller, tcpdump, TCPView and CurrPorts. You can choose from more than 10 Network Monitors like TCP Viewer for Windows, Linux, Mac and Android.
Wireshark is a premier network protocol analyzer used globally in industries and education, offering multi-platform support, deep protocol inspection, powerful display filters, and VoIP analysis. It allows both live capture and offline analysis, supporting various networks and protocols.
United States
Advanced multi-OS desktop tool for monitoring and managing local TCP ports, identifying bound processes, watching ports for notifications, handling Cloudflare Tunnels, filtering and pinning, managing Kubernetes port-forwards with logs, plus real-time process termination.
Command-line packet analyzer for monitoring, capturing, and filtering network traffic in real time. Supports TCP/IP protocols, pcap file export, BPF syntax, timestamped outputs, and works on UNIX-like systems with both wired and wireless interfaces.
Displays active TCP and UDP endpoints, including local and remote addresses, connection states, and owning processes. Provides real-time color-coded updates, adjustable refresh, IP resolution, and options to close connections or export data for analysis.
United States
Displays all open TCP/IP and UDP ports with full process details including name, path, version, creation time, and user information. Supports closing connections, killing processes, marking suspicious ports, exporting data in multiple formats, and portable operation for network monitoring.
Israel
Impacket is a collection of Python classes for working with network protocols. Impacket is focused on providing low-level programmatic access to the packets and for some protocols (e.g. SMB1-3 and MSRPC) the protocol implementation itself.
TcpLogView is a simple utility that monitors the opened TCP connections on your system, and adds a new log line every time that a TCP connection is opened or closed.
Israel
Proc Net Monitor is the FREE software to monitor & analyze the Network activity of all running Process on your system.
It shows all open network Ports (TCP/UDP) and active Network Connections for each process.
United States
PortsMonitor is a system utility for monitoring system TCP/IP network connections by application, and connections' status. With Search Expression support, you can filter connection with preferred conditions.
tcpflow, a TCP Flow Recorder, is a program that captures data transmitted as part of TCP connections (flows), and stores the data in a way that is convenient for protocol analysis or debugging. A program like 'tcpdump' shows a summary of packets seen on the wire, but...
MicroOLAP TCPDUMP is a clone of tcpdump , the most used network sniffer/analyzer for UNIX, compiled with the original tcpdump code (http://www.tcpdump.org/), and MicroOLAP Packet Sniffer SDK.
Ukraine
TcpView For Linux. Touch screen friendly design graphical network connections viewer for Linux.
