Alternatives to OctroTalk for all platforms with any license

  • Pidgin icon

    Pidgin

    Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in support for NSS, offering client-to-server message encryption for...

    Open Source Mac Windows Linux BSD PortableApps.com Xfce

  • Jitsi icon

    Jitsi

    Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR...

    Open Source Mac Windows Linux Web / Cloud Android BSD

  • Facebook Messenger icon

    Facebook Messenger

    Facebook Messenger is a faster way to message. Reach friends right on their phones, get and send messages fast, message everyone at once and more. Top Features: • Message friends, groups of friends or anyone in your mobile...

    Free iPhone Windows Web / Cloud Android Blackberry Android Tablet ... iPad Apple Watch Android Wear

  • Trillian icon

    Trillian

    Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them! We think conversation should be easily shared between all of your devices, not trapped...

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

  • Adium icon

    Adium

    Adium is a free and open source instant messaging application for Mac OS X, written using Mac OS Xs Cocoa API, released under the GNU GPL and developed by the Adium team. Based on the libpurple protocol library, Adium can connect you...

    Open Source Mac

  • Empathy icon

    Empathy

    Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You can tell it about your accounts on all those services and do all your chatting within one application. ...

    Open Source Linux BSD

  • 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 owned by the Russian "mail.ru" group (known for one of the largest social networks). ICQ has...

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

  • Miranda IM icon

    Miranda IM

    Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols. Designed from the ground-up to be resource efficient while still providing a rich feature set, Miranda includes support for AIM, Jabber...

    Open Source Windows PortableApps.com

  • Miranda NG icon

    Miranda NG

    Miranda New Generation is a successor of a popular multi-protocol instant messaging client for Windows - Miranda IM . Very light on system resources and extremely fast. Protocol Support: * AIM AOL Instant Messenger * ...

    Open Source Windows PortableApps.com

  • Psi icon

    Psi

    Psi is an instant messaging application for Windows, Linux, and Mac OS X that connects to the free, open Jabber IM network (also known as XMPP). Localized versions of Psi are available in almost twenty different languages. Built-in...

    Open Source Mac Windows Linux BSD

  • iMessage icon

    iMessage

    Love iMessage on your iPhone? You'll love it on your Mac, too. Messages lets you send unlimited messages to anyone on a Mac, iOS device, or Apple Watch. Your messages can include photos, videos, documents, audio, and contacts, and...

    Free iPhone Mac iPad Apple Watch

  • Digsby icon

    Digsby

    Digsby is a multiprotocol IM client that lets you chat with all your friends on AIM, MSN, Yahoo, ICQ, Google Talk, and Jabber with one simple to manage buddy list. Its also a social networking tool that alerts you of events like new...

    Open Source Windows

    • Discontinued The application is not developed actively anymore. The source code has been made open for the community to take over but that didn't make any impact: https://github.com/ifwe/digsby | https://web.archive.org/web/20121205002331/http://blog.digsby.com/archives/1969/
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  • IM+ icon

    IM+

    Chat everywhere! IM+ is the most widely used mobile IM app! Connect all-in-one to MSN, Yahoo!, Google Talk, AIM, Jabber, ICQ, Facebook, MySpace and Twitter on ALL popular mobile platforms. The widest selection of unique features...

    Freemium iPhone Windows Phone Web / Cloud Windows Mobile Android Java Mobile ... S60 HP webOS Blackberry Android Tablet iPad Kindle Fire

  • Spark icon

    Spark

    Spark is an Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and strong security. It also offers a great end-user experience with...

    Open Source Mac Windows Linux Self-Hosted

  • Psi+ icon

    Psi+

    Psi+ is a development branch of Psi IM XMPP/Jabber client. Psi is a cross-platform powerful XMPP/Jabber client (Qt, C++) designed for the Jabber power users.

    Open Source Mac Windows Linux BSD

  • Instantbird icon

    Instantbird

    Instantbird is an instant messaging client based on Mozilla XULRunner and the open source library libpurple created by the software developers of Pidgin . Over 250 add-ons allow user customization...

    Open Source Mac Windows Linux PortableApps.com

  • Kopete icon

    Kopete

    Kopete is an instant messenger supporting AIM, ICQ, MSN, Yahoo, Jabber, IRC, Gadu-Gadu, Novell GroupWise Messenger, and more. It is designed to be a flexible and extensible multi-protocol system suitable for personal and enterprise...

    Open Source Mac Linux BSD

  • YakYak icon

    YakYak

    What does it do: * Send/receive chat messages * Create/change conversations (rename, add people) * Leave/delete conversation * Notifications * Toggle notifications on/off * Drag-drop, copy-paste or...

    Open Source Mac Windows Linux

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  • Bleep icon

    Bleep

    Private instant messaging via secure, distributed technology. Download & Go Enjoy the benefits of having an account without the hassle of creating one. Simply download the app, invite your friends and start chatting. ...

    Free iPhone Mac Windows Android Android Tablet iPad

  • Disa icon

    Disa

    Unified Messaging is awesome! Disa is your new messaging hub. Conversations from different services can seamlessly be joined together, or disbanded within seconds.

    Open Source Android Android Tablet Kindle Fire

  • KakaoTalk icon

    KakaoTalk

    KakaoTalk is a phone number based messenger service that allows users anywhere in the world to chat one-to-one or in a group for free. (no SMS service) Message arrivals are instantly notified with Push Alert and you can send...

    Freemium iPhone Windows Phone Mac Windows Android Blackberry ... Android Wear Kindle Fire

  • Coccinella icon

    Coccinella

    Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration with other people.

    Open Source Mac Windows Linux BSD

  • Kadu icon

    Kadu

    Kadu is an open source Jabber/XMPP and Gadu-Gadu instant messenger client for Linux, *BSD, Mac and Windows.

    Open Source Mac Windows Linux BSD

  • Kaiwa icon

    Kaiwa

    Inspired by the best and built for XMPP, Kaiwa is a beautiful web-based client for the only standardized chat protocol.

    Open Source Linux Web / Cloud Self-Hosted Node.JS

  • Tencent QQ icon

    Tencent QQ

    Tencent QQ, generally referred to as QQ, is the most popular free instant messaging computer program in Mainland China, and has over 856.2 million users. In April 2010, QQ.com ranked 10th overall in Alexas internet rankings.

    Free iPhone Windows Phone Mac Windows Android Android Tablet ... iPad Facebook

  • qutIM icon

    qutIM

    qutIM - free open-source multiprotocol ( ICQ, Jabber/GTalk/Ya.Online/LiveJournal.com, Mail.Ru, IRC ) instant messenger for Windows, Linux, MacOS X, OS/2, Symbian, Maemo/MeeGo, Solaris and *BSD.

    Open Source Mac Windows Linux S60 BSD Haiku

    • Discontinued The project seems to be no longer developed. Last versions for Windows, Mac, Linux and other platforms can be still downloaded from the official website.
  • MetroIRC icon

    MetroIRC

    An IRC client for the Windows desktop which follows the Metro design guidelines.

    Open Source Windows

  • Brosix icon

    Brosix

    Brosix is a secure Instant Messaging and collaboration tool, ideal for everyday communication for business and leisure. Two different versions of Brosix give you the opportunity to choose the version best for you. » Brosix...

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

  • AIM icon

    AIM

    AOL Instant Messenger is an instant messaging and presence computer program which uses the proprietary OSCAR instant messaging protocol and the TOC protocol to allow registered users to communicate in real time.HistoryAOL Instant...

    Freemium iPhone Mac Windows Web / Cloud Windows Mobile Android ... Blackberry Windows RT iPad

  • Pinger icon

    Pinger

    Pinger lets you text and talk free with the people you care about most, anywhere on the planet. Tap a picture and you'll see all of your communications—texts, pics, calls, voicemails—all in one place. Together with millions of...

    Free Personal iPhone Mac Windows Web / Cloud Android

  • Messenger for Desktop icon

    Messenger for Desktop

    A simple & beautiful app for Facebook Messenger. Chat without distractions on any Operating System.

    Open Source Mac Windows Linux

    • Bundleware Be careful during the installation: https://alternativeto.net/discussions/applications/11718/be-careful-in-the-installation/
  • Voxox CloudPhone icon

    Voxox CloudPhone

    Cloud Phone is a virtual pbx that enables small businesses to quickly, easily, and affordably set up a business phone solution without having to purchase hardware Core Features Auto Attendant The Auto Attendant is the center...

    Commercial iPhone Web / Cloud Android

  • Spreed icon

    Spreed

    Spreed is the worldwide unified web conferencing service offering integrated web and telephone conferencing. It is based on Flash Player. Free service includes 3 attendees and max 1.5h meetings. Single events or monthly service can be...

    Commercial Mac Windows Linux Web / Cloud

  • Chatzy icon

    Chatzy

    Chatzy is a free private chat service which you can use to communicate with people you already know or people who visits your blog or website. With Chatzy you can create a chatroom and send out email invitations very quickly and...

    Free Web / Cloud

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