Alternatives to SUM - Secure Ultimate Messenger for all platforms with any license

  • LAN Messenger icon

    LAN Messenger

    LAN Messenger is a p2p chat application for intranet communication and does not require a server. A variety of handy features are supported including notifications, personal and group messaging with encryption, file transfer and...

    Open Source Mac Windows Linux PortableApps.com

    No features added Add a feature
    • Discontinued Last Update: 2012-07-29. See https://sourceforge.net/projects/lanmsngr/
  • 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
  • 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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