Alternatives to IBM Sametime for all platforms with any license

  • IP Messenger icon

    IP Messenger

    Very simple, lightweight, and compact size IP based messenger which used by almost all Japanese companies and its affiliates. IP Messenger is one of the awesome tool which allows you to chat on LAN or network with other people if...

    Free Windows Android

    No features added Add a feature
  • Squiggle icon

    Squiggle

    Squiggle is a free server-less peer to peer LAN messenger. Just download and run it and you're ready to talk to everyone on your LAN.

    Open Source Windows

    No features added Add a feature
  • qchat

    QChat is a simple crossplatform LAN chat. It is written using Qt4 so you can compile it on any platform supported by Qt.

    Open Source Mac Windows Linux

    No features added Add a feature
    • Discontinued official web site appears to have not been updated since 2008.
  • Simple Chat icon

    Simple Chat

    Simple Chat is a simple, opensource and powerful cross-platform client-server chat for local networks and the Internet. Features Open-source software Simple Chat is is absolutely free and open source software. Simple Chat...

    Open Source Mac Windows Linux

    • Discontinued Last version, 2.3.3, was released on 31 August 2014. It can be still downloaded from the official website.
  • BORGChat icon

    BORGChat

    BORGChat is a LAN messaging software program. It has achieved a relative state of popularity and it is considered to be a complete LAN chat program.

    Free Windows

    No features added Add a feature
  • Bopup IM Suite icon

    Bopup IM Suite

    Bopup IM suite organizes, manages and controls all of your business instant messaging system. This secure messaging suite is designed to provide efficient and private real-time communication over networks of any size. There are...

    Commercial Windows

    No features added Add a feature
  • jMessenger

    An open-source java based chat and file-transfer application

    Free Mac Windows Linux

    No features added Add a feature
  • Vypress Chat icon

    Vypress Chat

    Vypress Chat is a user-friendly application for real-time chatting in small office or home office (SOHO) local networks. This unique chat software features an easy-to-understand format for text-based conferences and discussions....

    Commercial Windows Linux

    No features added Add a feature
  • Smarsh Instant Messenger icon

    Smarsh Instant Messenger

    smarshIM Mobile is a free application download that requires a paid account on the smarshIM service to operate. smarshIM is a turnkey corporate instant messaging and IM archiving service that can be used by any firm. Users can...

    Commercial iPhone

    No features added Add a feature
  • IntraMessenger icon

    IntraMessenger

    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. :...

    Open Source Windows Linux

    No features added Add a feature
  • Network Assistant icon

    Network Assistant

    Network Assistant is a multiple-mode user-friendly network communication utility, including real-time chat, shared whiteboard, message board and instant messaging. It is intended to be used in small office or home office (SOHO) local...

    Commercial Windows

    No features added Add a feature
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  • Output Messenger icon

    Output Messenger

    Private and Secure Instant Messenger for Office designed specifically for keeping remote employees and multiple offices in sync. "Give your team the freedom to chat, talk, share and interact together from anywhere, on any...

    Commercial Mac Windows Linux Android iPhone Self-Hosted

  • BigAnt Office LAN Messenger icon

    BigAnt Office LAN Messenger

    BigAnt Office LAN Messenger offers rich features for secure and stable business communication. Including instant messaging, group discussion, remote desktop sharing, history logging, file and folder exchange, compatible with Windows...

    Commercial Windows

    No features added Add a feature
  • Softros LAN messenger icon

    Softros LAN messenger

    Local instant messaging application for an office chat, messages broadcast and files transfer. .

    Commercial Mac Windows Android Android Tablet

    No features added Add a feature
  • Lan Messenger

    LAN Messenger is a decentralized UDP IM-style chat client which supports usernames, guaranteed-delivery IMs, broadcast chat, encryption, file transfer, simple UI, persistent settings, and IP blocking.

    Open Source Mac Windows Linux

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