Mibbit is described as 'No Java, no flash. With Mibbit, chatting online is easy, just choose your nickname and press go! No sign-up is required and you can use it from wherever you are with just a web browser' and is an website in the social & communications category. There are more than 25 alternatives to Mibbit, not only websites but also apps for a variety of platforms, including Linux, Windows, Mac and Self-Hosted apps. The best Mibbit alternative is Thunderbird, which is both free and Open Source. Other great sites and apps similar to Mibbit are SeaMonkey, HexChat, mIRC and irssi.
Cross-platform email client supporting multiple identities, chat, and strong filtering. Extend functionality with add-ons like RSS/Atom feed readers and PGP support.
Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser.
HexChat is an IRC client based on XChat for Linux , but unlike XChat it’s completely free for both Windows and Unix-like systems.
mIRC is a popular Internet Relay Chat client used by individuals and organizations to communicate, share, play and work with each other on IRC networks around the world.
Irssi is a terminal based IRC client for UNIX systems. It also supports SILC and ICB protocols via plugins.
XChat is an IRC chat program for both Linux and Windows. It allows you to join multiple IRC channels (chat rooms) at the same time, talk publicly, private one-on-one conversations etc. Even file transfers are possible.
Free open-source IRC client offering cross-platform support, Qt interface, rich scripting, customizable themes, Unicode, SSL encryption, logging, multi-server connectivity, DCC file transfers, plugin system, event automation, proxy and IPv6 compatibility, and localization.
A hand-crafted IRC client that you can enjoy. Designed to be used easily and freely. More friendly than other webirc clients giving the general public an easy option to connect to any IRC network.
Konversation is an IRC client which gives you speedy access to Freenode network's channels, where you will find support for most distributions.
IRCCloud is an IRC client with a future. Stay connected, chat from anywhere, and never miss a message.
ChatZilla is a clean, easy to use and highly extensible Internet Relay Chat (IRC) client, built on the Mozilla platform, which provides all the usual features: multiple servers, a built-in list of standard networks, easy searching and sorting of available channels, logging, and...
Traditionally, chat clients on the Mac have been anything but glamorous. Colloquy is an advanced IRC, SILC & ICB client which aims to fill this void. By adhering to Mac OS X interface conventions, Colloquy has the look and feel of a quality Mac application.
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