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  1. Fire is a multi-protocol instant messenger client for Mac OS X based on freely available libraries for each service. Currently Fire handles AOL Instant Messenger®, ICQ®, MSN® Messenger, Jabber, limited IRC, Yahoo!®, and Apple Bonjour communications.

    Discontinued

    The project is no longer developed. Last version, 1.5.6, released in February 2006, can be still downloaded from SourceForge.

  2. smarshIM Mobile is a free application download that requires a paid account on the smarshIM service to operate.


  3. Qute Messenger is an mobile instant messenging app. Users can send each other text, voice, images, emotion totally free except little operator data charge.

    Discontinued

    dead

  4. Minbif aims to use the libpurple library from the Pidgin project to provide an IRC-friendly instant messaging client.
    No screenshots yet
  5. BuddyTalk is a java based instant messanger, you can login with your gmail username and password to chat with your friends or to test the software you can login with the provided username and pass. BuddyTalk is based on smack and xmpp protocol.
    • FreeProprietary
    • Mac
    • Android
    • iPhone
    • Android Tablet
    • Windows Phone
    • iPad
    OctroTalk is an Jabber/Gtalk client with support for GTalk (GMail) audio and Video calls. OctroTalk also supports SIP calling (through a provider of your choice).
  6. HCL Sametime instant messaging products integrate real-time social communications into your business environment, providing a unified user experience through instant messaging, online meetings, voice, video and data.
  7. Meeet.at is a free web voice chat solution that works without any plugins or registration all you need is a modern Browser (Chrome recommended). Creating a channel takes only 3 seconds you don't have to register or pay any special attention.

    Discontinued

    Website was taken down.

    No screenshots yet
    • FreeProprietary
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Tapstack introduces the Tap - an entirely new way to be in touch with family and friends. A Tap is a photo or video of up to ten seconds that’s simultaneously shot and sent in one simple action: tapping the face of one of your friends.
  8. AirTalkr is a desktop based instant messaging software that runs on AIR, with support for MSN, ICQ, GTalk, Yahoo and AIM. It has some interesting features, like tabbed conversations.

    Discontinued

    The website and the program are no longer available. Last release was 2007 Beta.

  9. Chat anonymously with people nearby you.
  10. CD Messenger is a simple, secure and smart solution for inter-office communication which fulfill all requirements of organization communication as well as individual needs.
    No screenshots yet
    • FreeProprietary
    • iPhone
    Bunch is the fastest way to video message your favorite 8 friends. Press and hold to send a video message to your Bunch. As soon as your finger leaves the screen, your message will send in 3 seconds. Once your friend has seen the message, it’s gone.
  11. Roomvine is a chatroom for every room, venue, hall or building in the real world. Safely interact with people at the same place without exposing your full identity.
  12. Create your own Instant Messenger communities! Uniquely designed and fully centralized under your (admin) control. Server (open source PHP/MySQL) provides great flexibility, including the external authentication possibility (e.g. : forum, CMS, blog, PGI, CMR...).
    No screenshots yet