Zoiper Free - Softphone for Windows, Mac OS X and Linux

Zoiper Free is a IAX and SIP softphone for Windows, Mac OS X and Linux. Its user-friendliness, diversity and richness of features set new standards for functionality and perfection.
Choose your operating system, download Zoiper, install it, connect to either a VoIP PBX or any VoIP provider throughout the world and off you go! Zoiper offers outstanding simplicity with enhanced interface to bring a smooth and satisfying VoIP communications experience. Explore the innumerable advantages of VoIP with Zoiper.
Zoiper Free is a IAX and SIP softphone compatible with the Asterisk platform as any other SIP or IAX capable system.

Zoiper Free Edition features

SIP + IAX/IAX 2 protocols, STUN support, STUN server per account, T.38 fax support,Echo cancellation, DTMF tones sending, DSCP support, Support for multiple audio devices, Automatic user registration, Call transfer, Hold function, Codecs: GSM, ulaw, alaw, speex, ilbc, Adaptive Jitter Buffer, Call history, Address book, Quick dial panel, Optional Automatic pop-up window for incoming call, Always on top, Call logs, Voice mail message information, Account password encryption, Upgrade notification, Adjustment of audio device, Codecs priority, Portable storage compatibility, Multilanguage support.

Re-branded Zoiper:Basic: colours, name and logo of your choice,Re-branding with additional development: e.g. changing the language; adding, disabling, removing of menus/options/buttons; adding functionalities;Complete: you can go for complete change of the interface and functionality.

Zoiper Biz, the advanced version of Zoiper Free, gives more features such as Native conferencing, API, TLS/TCP support with SIP, TLS with SRTP support, g.729 (optional), Mail software plug-in: Outlook/Thunderbird integration, Zoiprint printer river and interface, Callto URL protocol, Automatic provisioning (XML), Call forward, Auto answer, Incoming URL handling, Automatic opening of incoming URL, Access voice mail message with one button, Attended transfer (native), Call recording (Single file recordings), Command line dialing, Custom ring tones, Open URL on different call events, Call history,  Call transfer, Unlimited number of accounts, Changeable number of lines (up to 6), More!

Both Zoiper editions may be customized to unique customer requirements. The license of this communication software is Freeware, you can free download and free use this Communication software. It's support Windows, Windows 2000, Windows Vista, Windows XP.

Download Zoiper Free

Jfbchat : Free Powerful Java-based Facebook Chat Client without Web Browser

Jfbchat is a small, simple and powerful application specially designed to offer you a Facebook chat client.The client supports Facebook profile photos and audio notifications for incoming messages, useful if you do not want to open the browser to chat with your friends.
Now you possible to sort contacts in groups , Jfbchat planning a search bar for contacts for the next release. It's also possible to see the profile photo of your friends both in the contact list and in the chat window.
A cool sound is now played for incoming and outcoming messages and another important feature is the new preference window where you can configure some options of the client.

The program was developed so that it uses the smack API to manage the XMPP protocol..

Download Jfbchat

Jfbchat suppoort platform Java, Linux, Linux Console, Linux Gnome, Linux GPL, Linux Open Source, MS-DOS, Unix, Win2000, Win7 x32, Win7 x64, Win98, WinMobile, WinOther, WinServer, WinVista, WinVista x64, WinXP, Other.

KVIrc - Free Open Source IRC Client for Linux, Unix, Mac and Windows

KVIrc is lite IRC client for Linux, Unix, Mac OS and Windows. The software is based on the the excellent Qt GUI toolkit and its code is released under the GNU General Public License. This is free and open source portable IRC client. KVIrc is being written by Szymon Stefanek and the KVIrc Development Team with the contribution of many IRC addicted developers around the world.

This lite IRC client allows you to chat and share information with people from all over the world using a simple and intuitive interface. KVIrc is able to connect to several servers at the same time (optionally with SSL and/or over IPv6). Unicode, ISO-8859, Asian and Windows-native character sets are supported. A special feature is the smart encoding, which allows the user to use 2 encodings at the same time.The chat interface is highly configurable and supports downloadable themes.The channel windows can be split in two subwindows, one for chat messages and the other for commands like joins/parts/mode changes.Every channel, query and DCC Chat is encryptable with Blowfish or AES/Rijndael.

KVIrc has its own scripting language named KVS which can be used to add complex functions a react automatically to network events. The scripting language allows you to enchance the KVIrcs interface and to handle special IRC network features that KVIrc itself is not aware of. Perl and Python can be also used to a certain degree. The SocketSpy feature allows developers to watch the raw communication between client and server.

KVIrc is included in major linux distributions: Ubuntu, Debian GNU/Linux, Gentoo Linux, Arch Linux, OpenSUSE and RedHat/Fedora. Other linux flavors are supported via community contributed binary packages and build scripts. KVIrc is also available for Microsoft Windows 2000 / XP / Vista / 7, Mac OS X and FreeBSD.

Features

Features include on latest KVirc 4.0.4 such as Full GUI Based configuration, MDI floatable windows, Built-in help browser, Themes, Pseudo-transparency, Drag & Drop toolbar editing, Activity Notifier Pop-Up, Status bar with Applet support, Unread text mark, 14 Languages Translations, Proxy support (SOCKv4, HTTP, SOCKSv5), Full IPv6 support (also for DCC transfers), SSL support (also over IPv6), Micryption, Modular architecture: unfrequently used features reside in external modules and are loaded only when necessary, Extensibility (a huge API for writing extension modules), UNICODE, Multiserver connection, Notify lists, Ignore lists, Registered users database, Lag meter, Configurable logging, Standard DCC CHAT and SEND (with resume) support, Extended DCC types( VOICE, RSEND, GET, RECV), DCC CHAT over SSL, DCC bandwidth limit, Built-in scripting language interpreter, scalars, arrays and hashes, aliases, popups, events, scriptable toolbars, Perl support, Ability to translate scripts,emoticons, animated avatars, Objects support in scripting language, etc.

Download KVIrc

Spark - Free Open Source Crossplatform IM Client for Business and Organizations

Spark is free, secure, fast, Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and powerful security. It also offers a outstanding end-user experience with features like in-line spell checking, group chat room bookmarks, and tabbed conversations.

Spark, based on the open IETF standard XMPP (Jabber) protocol is a cross-platform, Java-based Client optimized for use with Jive Software's Open-Source XMPP Wildfire Server.
The Spark API provides a framework for adding extensions on top of the protocol and/or UI of the Spark client. For example, you could write your own message filter or add a button to a chat room and send files using the File Transfer API.

Combined with the Openfire server, Spark is the easiest and best alternative to using un-secure public IM networks. Sparkplugs dynamically extend the features of the Spark instant messaging client. Use Sparkplugs to customize Spark for your business or organization or to add an innovative twist to instant messaging.

Features

Spark features such as Chat, IM, Voice Chat, conference room, spellcheck, ChatManager, SparkManager, Ability to add your own XMPP functions using the SMACK API, SoundManager, Event Handlers, ChatRoomListener, File transfers, ContactListListener, MessageListener, PresenceListener, ContextMenuListener, ContactItemHandler, SessionManager,Components, GaduGadu, IRC, and SIMPLE transports now supported, avatar, note editor, etc.

Download Spark

Spark is support for Windows ,Linux, and Mac OS. This is freeware.

Barablu - Make Free Call and Chat on PC, Symbian, Java and Windows Mobile

 Barablu is a feature-rich application for Symbian, Java and Windows Mobile platforms that allows you to talk to other Barablu users on your mobile phone free of cost. You can also send text SMS free of cost using this application. But, if you want to call or send text SMS on a mobile phone or fixed line which does not have Barablu, you will have to pay a small fee. Barablu’s service is compatible with Windows Mobile as well as Nokia Symbian S60 phones.

This Barablu app allows you to synchronize and import your contacts on Yahoo Messenger, AIM, Google talk, Skype, Windows Live Messenger and ICQ with Barablu contacts. It is a great social networking tool that can be used on a mobile phone as well as your personal computer.

Another features this IM client lets you manage contacts, auto-roam between GPS and Wi-Fi, transfer files and conduct group chats.You can take advantage of group chat with as many as 49 friends at the same time using this application, while also performing video-conferencing calling using this application. Barablu provides you the facility to have your own online telephone number, you can call forward messages and have voicemails left on your PC. You can also send any files like pictures or songs from your mobile phone to your PC or vice versa.

Features

Make FREE calls from barablu to barablu, Make and receive free Video call, Conference call (up to 49 people like group chat), Make free calls and IM your Skype, MSN, Google Talk and Yahoo contacts from barablu, Have your own on-line telephone number, Call forward messages from your PC to your phone, Have voicemails left on your PC, Import IM contacts, Send photos and other files from your phone to your PC, etc.

Download Barablu

Barablu works on Windows Vista/2000/2003/XP, Windows Mobile, Simbian and Java. It's freeware of software.

Sazneo - Free Instant Messaging, Group Chat and Online Communities for Business

Sazneo is a real-time business-to-business communication service that allows internal teams to communicate more effectively with their clients, suppliers and partners. Companies that use Sazneo experience an accelerated sharing of information across teams, fewer meetings, fewer conference calls and a dramatic drop in e-mail volumes. The service is accessible from anywhere using a web browser and does not require additional hardware or software. 

Sazneo is a relatively new group chat app that enables businesses to break conversations down into different channels, which can include team members as well as people from outside the organization. Within each chat channel, there’s a repository for file uploads so team members can easily exchange documents, graphics and other files.

Amount of people in the group chat is unlimited and everything discussed is completely private as no outside person is able to enter the chat room without first being invited by one of the members already inside. The free chat application is also particularly handy when dealing with suppliers, partners and customers as all communication is in real time.

Each person, within the chat, has a profile which others may read at any time. This profile usually only contains professional information and nothing of a personal nature. Users are also able to add channels to their list of pre-existing channels. These channels can be either company channels (formed by the company itself) or privately added by yourself, making you the “channel leader”.

If you create your own channel, you have the option of making it invisible to others in your company. Or you may want only a few of your close colleagues to know of its existence, by clicking on the option menu you will find various methods of keeping it either a secret from the boss or only making it available to a select few. Channels are able to be closed at any time and the data exported to another destination.

Features

Sazneo features such as Chat, Group Discussion, Mobile support, Desktop Notifier, Organize group conversations with channels, Private messaging, File sharing, Conversation history, etc.

Download Sazneo

This application makes use of all Internet browsers, there is no need to download and install software; you can just simply sign up from the Sazneo homepage and start “talking”.

qutIM - Free Open Source Multi-protocol Instant Messenger Client for Windows, Mac, Linux and Mobile

qutIM is free open-source multiprotocol ( ICQ, Jabber / GTalk / FaceBook / Ya.Online / LiveJournal, Mail.Ru, IRC ) instant messenger. You can even use this qutIM Multi Protocol Client to connect to VKontakte.ru and Twitter. Open Source license is under GNU General Public License, that allow you to download the source code and modified them by yourself. You can help to make it better, for example, with coding, design, testing, etc.
qutIM can be easily customized by every user, including creating personalize soundpacks. Just select a sound for each event in a Sound section of the Configuration dialogue of qutIM. Then, click Export and save .xml file in some folder.

Project began in January 2008 and is under active development. Main goal was to create fast and user friendly ICQ client. Nowadays qutIM provides powerful plugin system for developers, so that it can support any IM-protocol.

qutIM written base on C++ wit Qt 4.4. It will run on most platforms including Mac OS X, Windows and Linux. You can also download the unofficial platform such as qutIM for Mac OSX, Debian GNU Linusk, SUSE Linux, Mandriva Linux and others platform of Operating System.

Features

Multiple accounts, Tabbed and windowed messaging modes, Internationalization support, File transfers, HTTP and SOCKS 5 support, Avatar support,  Adium status icons and animation smiles support, Adium styles for chat window, contact list, theme border, Sound notifications , Conferences, Plugin support, ICQ Protocol X statuses, Anti Spam Filter,Fast and uses little memory,Cross platform, Open source, Permanent development, Text translation function in chat window, and more..

Download qutIM

qutIM working on Desktop platforms:Windows, Linux, MacOS
and mobile platforms: Maemo 5, Symbian. It's freeware.

Chatjet - Fast and Flexible Chat Server for Business

Chatjet is a highly optimized, integrated Chat server software for any form of webchat as well as for communications solutions in corporate intranets. It is used for moderated chat events, public chat communities, e-learning and for online customer support.
The system is based on HTTP/HTML, so no plugins are required for Chatjet-powered chats. Due to its support for SSL encryption and a broad range of security features, the system is perfectly suited for usage in mission-critical applications.
The Chatjet Chat Server system perfectly integrates into existing backends - it supports all common SQL database systems on the market, LDAP, ODBC, SSL, IRC, WAP and other open protocolls. Several kinds of moderation and message routing are supported.

Chatjet is stand-alone server software. It contains a complete HTTP webserver which is configured specifically for the technical requirements of a webchat.The server core was Assembler-optimized by hand, and therefore is lightning-fast even for enormous numbers of participants.
On the basis of this server core, the system delivers a special HTML frameset to the webbrowser of the user, which among other things contains the chat messages. The interesting aspect of this approach is: anything that the system delivers can be managed by you.

Download Chatjet

Chatjet is not freeware ( $1440 to buy ), and support for Windows NT 4.x/2000/XP/Linux.

KewlTalk Chat - Free Customizable and Rebrandable Hosted Chat for Social Network, Online Community or Website

KewlTalk Chat is a Customer Support product from kewltalkchat.com. This free chat service can be integrated into your community website. KewlTalk Chat is No Installation, No Configuration, No Maintenance, No Plug-In, No Database, No Chat Client Needed and No Cost!
Customized skin to match the theme of your site. Kewltalk fully re-brandable so that the service appear to be provided entirely by you. RSS delivers fresh new exciting contents directly to your users. Run your own advertisement, and much more...

Download Kewltalk Chat

The license of this Kewltalk software is Freeware, so you can free download and free use this Business & Finance software. It's support Windows All, Linux, Linux Console, Linux Gnome, Linux Open Source, Unix.

ASP.NET Ajax Chat - Fast Powerful Ajax Chat and Instant Messaging Solution

ASP.NET Ajax Chat is Web 2.0 ASP.NET Ajax Chat is powered by Ajax which is the latest web based technology powering the Web 2.0 phenomenon. Ajax powered applications work like Windows applications – no annoying page refreshes. All major browsers support Ajax which means users accessing your chat do not need to install any 3rd party plugins such as Flash or Java.

Developed using ASP.NET and AJAX technology Our powerful AJAX approach combined with Microsoft's ASP.NET provides a most powerful Combination to deliver a reliable and scalable app, which is light weight and extremely simple to use.
AspNetAjaxChat uses AJAX to smoothly refresh and supports multiple rooms, private messages, private chats, moderation, customized themes based on CSS and much more. ASP.NET AJAX Chat is an easy to use yet extremely powerful Ajax Chat and IM solution. The software is simple to install, fast and customizable.

You would find it easy to share the videos and files with it as you need not to open any other application. The images and videos for sending appear in the same window and you cab view them easily. Put smileys to make your chats more interesting and expressive. You can also set to filter the bad words, send private messages and also choose to allow guest entry. You can set the ignore list and block the individual users. It also consists of the sound alert for the new message or for the message that contain your nickname. You can easily change the theme for the chat window.

Features

Easy to install and configure, High reliability, scalability and high load support, Smooth end-user experience more,  Integration with existing user database more, Direct log in when integrated with user database, Small, fast, cross-platform, font/color/style customization, emoticons, private messaging, private chat room,Bad words filter, Per-user ignore list, Anti-flood protectionn, Kick / Ban users, Password protected rooms, Localized multi-languages, Live AJAX text chat, file and photo transfer, audio/video chat, etc.

Download AspNet Ajax Chat

This AspNet Ajax Chat is not freeware. The price is EUR79.00. AspNet Ajax Chat support Windows Vista/2003/XP.