Open-source alternatives to Xtcp

FTP client package for Go

Command-line tool and library for Windows remote command execution in Go

Package for downloading things from a string URL using a variety of protocols.

Simple mDNS client/server library in Golang

go websocket, a better way to buid your IM server

A library for working with IP addresses and networks in Go

Gmqtt is a flexible, high-performance MQTT broker library that fully implements the MQTT protocol V3.x and V5 in golang

Fortio load testing library, command line tool, advanced echo server and web UI in go (golang). Allows to specify a set query-per-second load and record latency histograms and other useful stats.

httplab is an interactive HTTP mock server, request inspection tool, and response simulator. It functions as a web server designed to capture and analyze incoming HTTP requests and headers in real time for debugging purposes. The tool enables the construction and delivery of custom HTTP responses to simulate various server behaviors. Users can forge specific headers and bodies to test how client applications handle different status codes and payloads, with the ability to save these configurations as response templates for consistent reuse across sessions. The project covers a broad surface o

This project is a Go library and framework for implementing the SSH protocol. It provides a toolkit for building custom SSH servers, managing encrypted connections, and handling remote command execution. The implementation focuses on flexible session management through callback-based handling and a pluggable authentication system that supports passwords, public keys, and certificates. It includes mechanisms for secure network tunneling, including local and reverse port forwarding for TCP and Unix domain socket traffic. The library covers a broad range of protocol capabilities, including cryp

gopacket is a Go library for live packet capture and multi-layer protocol decoding. It provides a framework for parsing raw network bytes into structured protocol layers, enabling inspection and analysis of network traffic directly from interfaces or packet capture files. The library distinguishes itself through a layered protocol stack that organizes decoders as independent, composable layers, and an interface-based decoder registry that supports extensible custom protocol development. It offers zero-copy packet decoding for high-throughput parsing, stream-based TCP reassembly to reconstruct

A simple wrapper around libpcap for the Go programming language