Psi

Psi is an instant messaging application for Windows, Linux, and Mac OS X that connects to the free, open XMPP network. Localized versions of Psi are available in almost twenty different languages.

Free
Open Source
Mac OS X
Windows
Linux
BSD

Psi is an instant messaging application for Windows, Linux, and Mac OS X that connects to the free, open XMPP network.

Localized versions of Psi are available in almost twenty different languages. Builtin support for the Unicode international text standard allows you to send and receive messages in virtually any language.

Links to official Psi sites

Features

The Best 51 Psi Alternatives

1427 Like

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.

Free Open Source Mac OS X Windows Linux BSD Xfce

Extensible by Plugins/Extensions Portable Video calling Voice Call Multiple languages Multiple Account support Multiple protocols Multiple protocols support Multiple chat protocols Supports XMPP
971 Like

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 OS X Windows Linux Android iPhone Web Blackberry Mac Windows Mobile

Portable Privacy protection Ad free Built in File transfer IFTTT integration Works Offline Share files Video calling Voice Call Cloud sync Multiple Account support Lightweight Group chat Multi Device Support Voice messages Search by tags Support for Themes Chat Bot Encrypted chat Photo Sharing Public groups chat Push to talk Anonymous Secure Filesharing End to end encryption Self destructing messages Share Videos Based on phone number Stickers Send Big files Portable Linux In Game Overlay Built in Photo editor Encrypted calls Encrypted VoIP calls GPS Location Tracking Messages in cloud Persistent History Secret chats
329 Like

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.

Free Open Source Mac OS X

Customizable Multiple languages Tabbed interface Support for Themes Multiple protocols OTR
221 Like

Miranda IM

Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols.

Free Open Source Windows

Portable Multiple protocols
180 Like

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.

Free Windows Android iPhone Android Tablet iPad Web Blackberry Apple Watch

Video calling Voice Call Group chat
154 Like

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.

Free Open Source Linux BSD

Built in File transfer Video calling Multiple protocols
117 Like

Nimbuzz

Nimbuzz offers limited availablility free calls and limited availability free text messaging for users via 3G and WiFi. Calls to other Nimbuzz users are free. PAY to call mobile or landline phones for as little as $0.

Freemium Mac OS X Windows Android iPhone Web HP webOS Java Mobile S60
102 Like

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.

Freemium Android iPhone Web Blackberry Windows Mobile HP webOS Java Mobile S60

Multiple Account support Multiple protocols support
68 Like

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 use.

Free Open Source Mac OS X Linux BSD
51 Like

Gajim

The goal of Gajim is to provide a full featured and easy to use Jabber client. Gajim works nicely with GNOME, but does not require it to run. It is released under the GNU General Public License.

Free Open Source Mac OS X Windows Linux BSD Xfce

Video calling Multiple languages Tabbed interface Group chat Encrypted chat OTR Supports XMPP
41 Like

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.

Free Open Source Windows

Extensible by Plugins/Extensions Portable Multiple languages
40 Like

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.

Free Mac OS X iPhone iPad Apple Watch
40 Like

Instantbird

instantbird is an instant messaging client based on mozilla xulrunner and the open source library libpurple created by the software developers of pidgin .

Free Open Source Mac OS X Windows Linux

Portable Multiple languages Multiple protocols
29 Like

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.

Free Open Source Mac OS X Windows Linux Self-Hosted

Extensible by Plugins/Extensions Tabbed interface Group chat
27 Like

Psi+

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

Free Open Source Mac OS X Windows Linux BSD

Video calling Voice Call Multiple protocols OTR
27 Like

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.

Free Open Source Mac OS X Windows Linux BSD Haiku S60
23 Like

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 Mac OS X Windows Android iPhone Android Tablet iPad Windows Phone Facebook
18 Like

Disa

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

Free Android Android Tablet Kindle Fire

Extensible by Plugins/Extensions Texting Unified messaging
18 Like

Palringo

Palringo is the lightweight Instant Messaging client for desktop computers. Express yourself in chat with emoticons and smileys to show your friends how you’re feeling.

Freemium
17 Like

Kadu

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

Free Open Source Mac OS X Windows Linux BSD

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Psi

Links to official Psi sites

Features

Categories

Tags

The Best 51 Psi Alternatives

Pidgin

Telegram

Adium

Miranda IM

Facebook Messenger

Empathy

Nimbuzz

IM+

Kopete

Gajim

Miranda NG

iMessage

Instantbird

Spark

Psi+

qutIM

Tencent QQ

Disa

Palringo

Kadu

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