メッセージングソフトウェア

• 
  WhatsApp無料

  A cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.

• 
  Telegram 4.2.4無料

  A messaging app with a focus on speed and security.

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  Messenger無料

  Connect with your favourite people.

• 
  Viber for Desktop無料

  Lets you send free messages as well as make free calls to other Viber users, on any device and network, in any country!

• 
  Skype 8.95無料

  Skype keeps the world talking. Call, message and share whatever you want for free.

• 
  LINE無料

  Exchange free instant messages with friends whenever and wherever with one-on-one and group chats.

• 
  Signal 5.62.0無料

  A simple, powerful, and secure messenger.

• 
  Discord無料

  All-in-one voice and text chat for gamers that’s free, secure, and works on both your desktop and phone. 

• 
  TeamSpeak Client 3.5.6無料

  Quality voice communication via the Internet.

• 
  Pidgin 2.14.10無料

  A chat program which lets you log in to accounts on multiple chat networks simultaneously.

• 
  Rambox 2.0.7無料

  Free, Open Source and Cross Platform messaging and emailing app that combines common web applications into one.

• 
  Linphone 5.0.0無料

  Communicate freely with people over the internet, with voice, video, and text instant messaging.

• 
  Softros LAN Messenger 10.1.8無料試用

  An easy-to-use LAN messaging application for safe, secure and effective intra-office communication.

• 
  BeeBEEP 5.8.4無料

  An open source, peer to peer, LAN messenger.

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  LAN Messenger 1.2.35無料

  A free instant messaging application for communication over a local network.

• 
  Mesh 1.1無料

  One messenger for Internet and LAN chat with end-to-end encryption.

• 
  Tox無料

  Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

• 
  Element無料

  Secure and independent communication, connected via Matrix.

• 
  AdiIRC 4.2無料

  An IRC client with multiserver support and a customizable interface. 

• 
  Franz 5.9.2無料

  A free messaging app for WhatsApp, Facebook Messenger, Telegram, Slack and more.

• 
  Gajim 1.5.4無料

  A fully-featured XMPP client.

• 
  GoldBug 2023.01無料

  Secure E-Mail Client & Instant Messenger with Multi-Encryption.

• 
  IP Messenger 5.5.1無料

  A pop up style LAN Messenger.

• 
  mIRC 7.71無料

  A popular Internet Relay Chat client used by millions of people, and thousands of organizations, to communicate, share, play and work with each other on IRC networks around the world.

• 
  RealPopup 11.0.1無料試用
• 
  Session無料

  An end-to-end encrypted messenger that minimises sensitive metadata, designed and built for people who want absolute privacy and freedom from any form of surveillance.

• 
  HighSide 8.0無料試用

  The secure Slack/WhatsApp alternative for organizations handling regulated/sensitive data.

• 
  KakaoTalk無料
• 
  Netchat 7.11無料

  Chat with other users in the same subnet.

• 
  Trillian 6.5.0.24無料

  Chat with other Trillian users or those on Facebook, Google, AIM, ICQ, XMPP, Yahoo!, Twitter, and more.