Alternatives to BuddyTalk Instant Messenger for all platforms with any license

Thunderbird

Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

Free Open Source Mac Windows Linux BSD PortableApps.com ... Haiku
Extensible by Plugins/Extensions Built-in RSS reader Built-in Calendar Calendar integration ... Categories Customizable Extensible by Plugins/Extensions Free API Gmail integration Google Calendar integration Import from Google Reader Support for IMAP Integrated Chat Integrated Web Browser Legacy addons support Multiple Account support Export to OPML Import feeds from OPML POP3 Support Portable Secure file sharing SMTP integration Tabbed interface Support for Themes Add a feature

1766 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. It has built-in...

Free Open Source Mac Windows Linux BSD PortableApps.com ... Xfce
Multiple protocols Multiple protocols support Extensible by Plugins/Extensions Supports XMPP ... Multiple languages Multiple Account support Multiple chat protocols Portable Video calling Voice Call Add a feature

1439 Like
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...

Freemium Mac OS X Windows Linux Web Android ... iPhone Blackberry iPad
Facebook integration Multiple protocols POP3 Support Team Collaboration Add a feature

270 Like
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...

Free Open Source Windows
Multiple protocols Add a feature

219 Like
- 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/
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 Add a feature

19 Like
MetroIRC

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

Free Open Source Windows
No features added Add a feature

7 Like
aMSN

aMSN is a free open source MSN Messenger clone. aMSN attempts to emulate the look and feel of Windows Live Messenger, and supports many of its features.

Free Open Source Windows Linux PortableApps.com
Built-in File transfer Group chat Multiple languages Portable ... Tabbed interface Add a feature

24 Like
- Discontinued The project is dead. The last release was on May 2012 according to SourceForge.
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 transfer files and messages and...

Freemium Mac OS X Windows Web Android iPhone
No features added Add a feature

4 Like
Jabiru

Jabber client for Android.

Free Android
No features added Add a feature

5 Like
- Discontinued The app has been discontinued. Last version, 2.2.2.1, released in May 2013, can be still downloaded from Google Play Store.
Gyach

Gyach is a GTK+ based Yahoo! Chat client.

Free Open Source Linux BSD
No features added Add a feature

2 Like
- Discontinued The project seems to be no longer developed. Last version, v0.9.8, released in July 2004, can be still downloaded from the official website.
Sim-IM

Sim-IM, Simple Instant Messenger, is a multiple protocol instant messenger for MS Windows, GNU/Linux, FreeBSD. Sim-IM supports Jabber/XMPP, Google Talk, ICQ and AIM...

Free Windows Linux BSD
Multiple protocols Add a feature

4 Like
- Discontinued The project is no longer developed. Last versions for Windows and Linux date back to 2008, but they can be still downloaded from the official website.
Centericq

Centericq is a text mode menu- and window-driven IM interface that supports the ICQ2000, Yahoo!, AIM, IRC, MSN, Gadu-Gadu and Jabber protocols.

Free Open Source Mac OS X Windows Linux BSD
Built-in RSS reader Add a feature

1 Like
- Discontinued The program is no longer updated. Last version, 4.21.0, released in September 2005, can be still downloaded from the official website.
Chit Chat for Facebook

Chit Chat for Facebook is a fast and easy way in which to reach your Facebook friends and family. Using Chit Chat, you can send Facebook instant messages from your...

Freemium Windows Web iPhone Blackberry Facebook
Facebook integration Add a feature

23 Like
Yahoo Squirrel

Organize groups and chats the way you want, so you can keep up without getting lost in the noise.

Free Web Android iPhone iPad
Group chat Add a feature

0 Like