123 Flash Chat Server is a full-featured chat server for high-load Web sites. It features a range of customization options, and can be smoothly integrated with the database of almost all leading CMS or forum systems including Joomla!, phpBB, skadate, and vBulletin. It includes plain text chat and video chat options, and is scalable enough to fit the needs of small business and large enterprises. A free 10-user edition is available. It's based on a Java server and a Flash client, but also has various alternative clients based on technologies such as HTML/AJAX, so it can run on many platforms, including iPhone and iPad. It features avatars, smilies, Flash emotions, voice messages, entering multiple rooms, dynamic skins, loading external avatars and profiles, and a media player. The HTML 5 client significantly improves the chat performance in terms of loading speed, video layout, and user interface.
Salut à Toi (or SàT: "Hi to You") is an XMPP/Jabber client with multi-frontends. You can use it on a desktop (Wix), with a console interface (Primitivus), as a command-line tool (jp), or on the Web (Libervia). A plugin architecture is used to make it modular. With SàT, you can perform all the expected XMPP functions (instant messaging, multi-user chat, file transfert, etc.), but you can also use your email client (MUA) to read and send your XMPP messages, play games, do microblogging, pipe Unix command results, make scripts, etc.
Stigma is a client for connecting to Omegle. It currently supports all of the non-video Web interface. Future releases will also have support for built-in translation, so non-English speakers can connect to the main Omegle site. There are no plans yet to get more than just the text version, but most of the text-chat functionality is usable and stable already.
GenY is a chat client for Yahoo! It features instant messages, chatrooms, conferences, buddy list and group management, Yahoo! ignore list management, local ignore list management, formatted text support including smileys, spam control, viewing webcams, receiving files through new Yahoo! file transfer service, receiving photos, viewing roomlist, status messages, and a built-in captcha handler. Profiles are supported for every service.