• Skype icon

    Skype

    Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice call...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Blackberry Chrome OS Windows RT Android Tablet BSD Windows Phone iPad Apple Watch Android Wear

  • Telegram icon

    Telegram

    Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful.

    Free Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet Windows Phone iPad Apple Watch Android Wear

  • Wire icon

    Wire

    Wire is a secure and private messenger for phones, tablets and desktop. Crystal clear voice and video calls, private group chats, file...

    Free Mac Windows Linux Web / Cloud Android iPhone ... Chrome OS Android Tablet iPad Microsoft Edge Chrome Opera Firefox

  • ICQ icon

    ICQ

    ICQ is one of the oldest instant messengers. First developed by the Israeli company Mirabilis, sold to AOL, sold again and currenly...

    Free Mac Windows Linux Web / Cloud Windows Mobile Android ... iPhone Java Mobile S60 Blackberry Android Tablet Windows Phone iPad Kindle Fire

  • Glip icon

    Glip

    Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your...

    Freemium Mac Windows Web / Cloud Android iPhone Android Tablet ... iPad

  • Basecamp icon

    Basecamp

    Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and...

    Commercial Web / Cloud

  • HipChat icon

    HipChat

    HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad Self-Hosted Apple Watch

  • Yahoo! Messenger icon

    Yahoo! Messenger

    Stay in touch with your friends and family while sharing favorite photos using one of the most popular instant messaging applications

    Free Web / Cloud Android iPhone Blackberry

  • HumHub icon

    HumHub

    HumHub is a free social network software and framework built to give you the tools to make teamwork easy and successful. It's...

    Open Source Mac Windows Linux Web / Cloud BSD Self-Hosted

  • eXo Platform icon

    eXo Platform

    eXo Platform is a Social Intranet designed for enterprises. It helps people work together in a collaborative workplace.

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... iPad

  • Podio icon

    Podio

    Podio is an online work platform. Combining hundreds of specialized and flexible work apps with messaging, tasks, reporting, workflow...

    Freemium Web / Cloud Android iPhone

  • Yammer icon

    Yammer

    Yammer is revolutionizing internal corporate communications by bringing together all of a company’s employees inside a private and...

    Commercial Web / Cloud Android iPhone Windows Phone

  • Know any more alternatives to Unison?

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  • BlackBerry Messenger icon

    BlackBerry Messenger

    BlackBerry Messenger is a FREE messaging app available for Blackberry, iOS, Android and Windows Phone. BBM has unique features to...

    Freemium Android iPhone Blackberry Android Tablet Windows Phone iPad ... Apple Watch Android Wear Kindle Fire

  • Campfire icon

    Campfire

    Campfire is a simple web-based real-time group chat tool for business. It makes real-time communication with 2-60 people as simple as...

    Commercial Web / Cloud iPhone

  • Voxeet icon

    Voxeet

    Free HD conference calls up to 8 participants. High definition voice, 3D immersive sound.

    Free Windows Android iPhone Android Tablet iPad

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    Brosix

    Brosix is a secure Instant Messaging and collaboration tool, ideal for everyday communication for business and leisure. Two...

    Free Personal Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad

  • Speek icon

    Speek

    At Speek we’re dedicated to bringing you super simple conference calling with no dial-ins, pins or downloads. Participants click the...

    Freemium Web / Cloud Android iPhone Windows Phone

  • MangoApps icon

    MangoApps

    Founded in 2007, MangoSpring transforms the way teams work together. The company's suite of social collaboration applications...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Blackberry Windows Phone iPad

  • Share this list of alternatives?

  • Huddle icon

    Huddle

    Huddle is online collaboration & content management for the enterprise. It gives you a network of secure online workspaces where...

    Commercial Web / Cloud Android iPhone Blackberry Android Tablet iPad

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    4talk Messenger

    4talk IM service is a complete IM service for communicating with your phone contacts using your PC in the office or at home. You can...

    Freemium Mac Windows Web / Cloud Android iPhone

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    Bopup Messenger

    This app allows to exchange secure messages and communicate instantly with users connected to the same communication server software...

    Commercial Windows Android Android Tablet

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    Bitrix24

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    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad Self-Hosted

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    Freemium Web / Cloud

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    Open Source Linux BSD

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    Mapple.me

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    Free Android

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    Jostle

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    Commercial Web / Cloud Android iPhone

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    Freemium Web / Cloud Self-Hosted

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    Jive-n

    Jive's enterprise social business software puts the power of social business at your fingertips. Discover social business software...

    Commercial Web / Cloud

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    OnePgr

    Onepgr is your online mini meeting. Onepgr allows speed, simplicity, and spontaneity. A "OnePgr" is a single page that...

    Freemium Web / Cloud Android iPhone Android Tablet iPad

  • chatter.com icon

    chatter.com

    Create a free private social network for your company. Collaborate with your coworkers with Chatter.com

    Freemium Web / Cloud Android iPhone Blackberry

  • ISL Groop icon

    ISL Groop

    Use ISL Groop to meet, demonstrate and train online with anyone in real time. As a host, arrange a new online meeting, invite...

    Commercial Mac Windows Linux Android iPhone

  • Sococo icon

    Sococo

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    Commercial Mac Windows Linux iPhone iPad

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    Stormz

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    Freemium Web / Cloud

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    Easy Redmine

    Easy Redmine is a web based collaborative project management application. It is used by companies from around the world to handle...

    Commercial Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad Redmine

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    Zoho Connect

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    Free Windows Web / Cloud Android iPhone Chrome OS iPad

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