123 Web Messenger can add a Facebook-like messenger bar to the bottom of the browser window of a visitor to your Web site, keeping your visitors active and connected. It offers both Web-based IM and an optional desktop IM application. 123 Web Messenger supports text and video chat options. The Web-based IM includes an invitation button in the user list page to initiate a one-to-one private chat.
JBuddy Messenger is an instant messaging client designed for everyday business use. It supports public instant messaging networks including AIM, ICQ, MSN, and Yahoo. With a paid license, JBuddy Messenger adds support for Google Talk, IBM Lotus Sametime, XMPP/Jabber, Microsoft Office Communications Server (OCS 2007) and Live Communications Server (LCS 2005), and the JBuddy Message Server. JBuddy Messenger offers the concept of a Meta-Buddy (Trillian calls them Meta Contacts), which is an aggregation of the presence of multiple screen names under one buddy. Also, buddy groups of the same name across multiple accounts can be visually merged to simplify large buddy lists.