Apps to Support for Multiple protocols

MobaXterm is a versatile, portable terminal for Windows, packing an enhanced X server and a suite of network tools like SSH, RDP, VNC, and Telnet into a single executable. It offers a tabbed interface and includes built-in Unix commands, file transfer capabilities, and session management.

MLDonkey is a discontinued open-source, multi-protocol file-sharing application acting as a back-end server. It supported various peer-to-peer networks like eD2k, Kad, and BitTorrent, offering a flexible solution for downloading and sharing files across different platforms.

Textual is a premium Internet Relay Chat (IRC) client exclusively designed for macOS. It provides a user-friendly interface, extensive customization options through themes and plugins, and robust support for common IRC features, aiming to offer a modern and polished chat experience.

Kiwi IRC is a modern, open-source web-based Internet Relay Chat (IRC) client designed for simplicity and ease of use. It allows users to connect to various IRC networks directly through their web browser without needing to install desktop software.

Zoiper is a versatile and easy-to-use SIP softphone designed for clear voice and video communications. It offers excellent audio quality, robust security features, and seamless integration with various communication protocols, making it ideal for personal and business use.

Konversation is a feature-rich Internet Relay Chat (IRC) client designed for the KDE Desktop Environment. It provides a user-friendly interface for connecting to IRC networks, participating in channels, and communicating with other users around the globe.

Shareaza is a veteran peer-to-peer file sharing client for Windows, distinguished by its support for multiple network protocols including Gnutella2 (G2), eDonkey, and BitTorrent. It offers a robust feature set for searching, downloading, and managing files across various networks, providing a versatile platform for digital content acquisition.

MTPuTTY (Multi-Tabbed PuTTY) enhances the popular PuTTY SSH client by adding a tabbed interface, allowing users to manage multiple SSH, Telnet, or RDP sessions within a single window. This improves workflow and organization for system administrators and developers.

Conversations is a privacy-focused, open-source XMPP/Jabber client for Android. It offers robust end-to-end encryption using OMEMO and OTR, supports modern XMPP extensions, and provides a secure, decentralized messaging experience without relying on proprietary servers. It's an ideal choice for users prioritizing security and open standards.

Internet Download Accelerator (IDA) is a flexible download manager designed to significantly boost download speeds by splitting files into multiple sections and downloading them simultaneously. It offers robust integration with popular web browsers, resuming capabilities, and support for various protocols including HTTP, HTTPS, and FTP.

WeeChat is a highly customizable, free and open-source command-line based chat client. Designed for efficiency and portability, it supports multiple protocols including IRC and XMPP, making it a versatile tool for connecting to various networks.

qutIM is a free and open-source, multi-protocol instant messenger designed for connecting to various networks including ICQ, Jabber, Mail.Ru, IRC, and VKontakte. It offers a unified interface for managing multiple accounts and conversations.

OpenMediaVault (OMV) is a free, open-source Network Attached Storage (NAS) solution based on Debian Linux. It provides a web-based interface for easy management of file storage, sharing, and backup services within a home or small business network.

Miranda NG is a highly extensible, multi-protocol instant messaging client for Windows. A successor to the popular Miranda IM, it offers a modular architecture supporting numerous chat networks, allowing users to consolidate their conversations into a single interface. It's designed for resource efficiency and deep customization.

Gajim is a free and open-source instant messaging client for the XMPP protocol. Built using the GTK+ toolkit, it offers a wide array of features for secure and flexible communication, including encrypted chat, group conversations, multi-protocol support via gateways, and extensive customization options.

SoftEther VPN is a free and open-source, cross-platform, multi-protocol VPN software solution. It functions as both a VPN client and server, offering high compatibility and advanced features for building secure and flexible VPN connections.

Fring was a pioneering mobile application that unified communication across popular platforms like Skype, MSN Messenger, ICQ, and Google Talk directly from your iPhone, offering voice calls, video calls, and messaging.

aMule is a free and open-source peer-to-peer file sharing application designed for flexibility and decentralization. Supporting the robust eDonkey and Kad networks, it offers a secure and privacy-focused approach to finding and sharing digital content across multiple platforms.

Kopete is a versatile, free and open-source instant messaging client designed initially for the KDE Plasma desktop. It distinguishes itself by supporting a multitude of protocols, allowing users to connect to various chat networks from a single application.

Raptr is a multifaceted gaming social platform and utility that combines social networking with game tracking, optimization tools, and in-game features, providing gamers with a centralized hub for managing their gaming life and connecting with others.

uGet is a powerful and lightweight open-source download manager for Windows and Linux. It accelerates downloads, supports multiple protocols like HTTP, FTP, BitTorrent and Metalink, and features resume capabilities, browser integration, and robust clipboard monitoring.

mIRC is a classic Internet Relay Chat (IRC) client for Windows, providing a robust and highly customizable interface for connecting to IRC networks and participating in online chat communities.

XChat for Linux is a venerable IRC chat client designed for connecting to IRC networks and participating in chat rooms (channels). It offers support for multiple simultaneous connections, public and private conversations, and a high degree of customization through plugins.

IM+ is a versatile instant messaging application designed to unify communication across multiple platforms. It supports a wide array of popular services, including Google Talk, Twitter DMs, Yahoo!, AIM/iChat, ICQ, Jabber, and even Slack. IM+ simplifies staying connected with friends, family, and colleagues, offering a centralized hub for all your chat needs.

FlashFXP is a robust and reliable proprietary FTP, SFTP, and FXP client for Windows. It offers a secure and efficient way to transfer, manage, and synchronize files across various servers and local storage, featuring a user-friendly graphical interface and support for multiple protocols.

FrostWire is a powerful, free, and open-source BitTorrent client with integrated search, media player, and support for various file-sharing protocols. It simplifies downloading and sharing large files, including music, videos, and software, while offering features like YouTube and Soundcloud downloading.

HexChat is a free and open-source Internet Relay Chat (IRC) client. Built upon the foundations of XChat, it offers a robust platform for connecting to various IRC networks and participating in real-time text-based conversations, making it a favored choice for users seeking a reliable and customizable chat experience.

Empathy is a versatile multi-protocol messaging client designed for text, voice, and video communication across numerous IM networks. It offers features like file transfers, location sharing, and integration with various services, providing a unified communication experience.

Miranda IM is a lightweight, open-source, multi-protocol instant messaging client designed specifically for Microsoft Windows. Known for its extensibility and resource efficiency, it allows users to connect to various chat networks simultaneously through a flexible plugin-based architecture.

OpenSSH is the leading open-source implementation of the Secure Shell (SSH) protocol, providing a secure and reliable method for remote access, file transfer, and network tunneling. It encrypts all communications, protecting against eavesdropping and connection hijacking.