Top Alternatives to Quassel IRC

Pidgin is a free and open-source multi-protocol instant messaging client designed to connect users across various chat networks with a single application. It's highly extensible through plugins and supports a wide range of protocols including XMPP, ICQ, and IRC.

Adium is a free and open-source instant messaging client for macOS, designed to connect to multiple chat networks simultaneously. Supporting protocols like Jabber (XMPP), Google Talk, AOL Instant Messenger (AIM), ICQ, MSN Messenger, and Yahoo! Messenger, Adium provides a unified interface for all your conversations.

Trillian is a versatile, multi-protocol instant messaging client that unifies various communication platforms like IRC, XMPP, and more into a single, user-friendly interface. It's designed for both personal and team collaboration, offering features like encrypted chats, group collaboration tools, and extensive customization options.

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.

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.

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.

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.

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.

Irssi is a highly customizable command-line IRC client popular among power users and system administrators for its extensibility and efficiency.

Colloquy is more than just a loyalty platform; it's a comprehensive customer engagement and data analytics solution designed to foster deep relationships and drive business growth. It provides tools for managing customer loyalty programs, facilitating direct communication, and deriving actionable insights from customer data.

KVIrc is a versatile and highly customizable graphical IRC client available for Linux, Unix, macOS, and Windows. It is designed to cater to both seasoned IRC users seeking advanced control and newcomers looking for a user-friendly interface to connect to various IRC networks.

Smuxi is a feature-rich, cross-platform IRC client designed with productivity and usability in mind. Inspired by the command-line power of Irssi, it provides a graphical interface for seamless communication across multiple networks including IRC, XMPP, and Twitter.

AdiIRC is a feature-rich and highly customizable free IRC client designed for both casual users and power users. It offers a portable experience, extensive customization options, and support for various IRC networks and protocols.

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.

Multi-platform IRC client tightly integrated with Mozilla browsers, offering a familiar interface for seamless chat experiences.

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.

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.

LimeChat is a feature-rich and user-friendly Internet Relay Chat (IRC) client specifically designed for macOS. It provides a clean interface for connecting to multiple IRC networks and channels.

IRCCloud is a premium, modern web-based IRC client that acts as a bouncer, keeping you and your conversations online 24/7. It offers synchronized chat history and state across multiple devices.

Shout is a modern, self-hosted web-based IRC client designed for ease of use and accessibility. It allows users to connect to IRC networks and channels directly through their web browser, offering continuous connectivity even when the browser is closed.