Skype is software for calling other people on their computers or phones. Download Skype and start calling for free all over the world.

The calls have excellent sound quality and are highly secure with end-to-end encryption. You don’t even need to configure your firewall or router or any other networking gear.

Additionally it doesn’t just work on Windows. Skype is also for Mac OS X, Linux and PDAs using Pocket PC, with a native look and feel for each platform. Talking, sending instant messages or even file transfers work between different platforms like a charm.

• Skype calling – Skype has all the features of an ordinary phone so it’s even easier to manage your calls.
• Video calling – see who you are talking to at the same time as speaking to them.
• Add Skype and SkypeOut contacts – Add contacts who use Skype and those who use ordinary phones so you can call more people.
• Organising groups – group contacts under certain names and share them with your contacts so they can talk to them too.
• Basic chat and emoticons – when it’s not convenient to call, chat or Instant Message (IM) your contacts.
• Group chat – for when it’s easier to chat or Instant Message (IM) all your friends at once.
• Profile settings – change how you appear to the world and let people know a bit about you.
• Conference calling – talk to more than one friend at a time.
• Import contacts – search your address book to find friends and family that already have a Skype name and start calling them for free.
• View Outlook contacts – view and call your Microsoft Outlook® contacts quickly and directly from your Skype contact list.
• Quickfilter and Speed-Dial – find Skype contacts, recent chats and SkypeOut contacts quickly and easily, then enter their Skype name to call them back quickly.

Size : 24 MB

Size : 1.73 MB

Size : 1.6 MB

Size : 18.4 MB

Yahoo! Messenger (sometimes abbreviated YIM) is an advertisement-supported instant messaging client and associated protocol provided by Yahoo!. Yahoo! Messenger is provided free of charge and can be downloaded and used with a generic “Yahoo! ID” which also allows access to other Yahoo! services, such as Yahoo! Mail, where users can be automatically notified when they receive new email. Yahoo! also offers PC-PC, PC-Phone and Phone-to-PC service, file transfers, webcam hosting, text messaging service, and chat rooms in various categories.

Yahoo! Messenger was originally launched under the name Yahoo! Pager on March 9, 1998.

In addition to instant messaging features similar to those offered by ICQ, it also offers (on Microsoft Windows) features such as: IMVironments (customizing the look of Instant Message windows, some of which include authorized themes of famous cartoons such as Garfield or Dilbert), address-book integration and Custom Status Messages. It was also the first major IM client to feature BUZZing and music-status. Another recently added feature is customized avatars. Yahoo Messenger also allows users to access Yahoo Chat Rooms.

Size : 16.7 MB

Windows Live Essentials (previously Windows Live Installer) is a suite of freeware applications by Microsoft which aims to offer integrated and bundled e-mail, instant messaging, photo-sharing, blog publishing, security services and other Windows Live entities. Essentials programs are designed to integrate well with each other, with the Windows operating system, and with other Windows Live web-based services such as Windows Live Photos and Windows Live Hotmail, so that they operate as a “seamless whole”. Windows Live Essentials will be integrated with Windows 7 (but not “bundled” with Windows 7) and available to be downloaded from Windows Live Downloads.

Size : 1.25 MB

Windows Live Messenger (formerly named MSN Messenger) is an instant messaging client created by Microsoft that is currently designed to work with Windows XP, Windows Vista, Windows 7, Windows Mobile/Windows CE, Xbox 360, Blackberry OS, iOS, Java ME, S60 on Symbian OS 9.x and Zune HD. The client has been part of Microsoft’s Windows Live set of online services since 2005. It connects to Microsoft’s .NET Messenger Service. The client was first released as MSN Messenger on July 22, 1999, and as Windows Live Messenger on December 13, 2005. In June 2009, Microsoft reported the service attracted over 330 million active users each month.

Size : 1.12 MB

Xobni is a San Francisco-based email startup. It was founded in March 2006 by Adam Smith and Matt Brezina from Adam’s dorm room in Cambridge, Massachusetts as part of the Y Combinator summer founder’s program. In late 2006, it relocated to San Francisco when the founders felt that the environment there was more suited to grow their company.

In March 2007, Xobni raised US$4.26 million from Khosla Ventures, First Round Capital, and Atomico, along with a number of angel investors.

Xobni’s first product, Xobni Insight, was launched into private beta on September 18, 2007, at the TechCrunch 40 conference. Xobni Insight plugs into Microsoft Outlook and offers fast search and people-based navigation of email archives. The company has hinted at plans to offer the same functionality for other email clients. Xobni Insight has received mostly positive coverage, although initial versions had performance problems on large inboxes. The company opened its beta to the public on May 5, 2008 and has since garnered media coverage from a number of blogs and media outlets such as The Wall Street Journal, The Boston Globe and Cnet.

In February 2008, Xobni hired Jeff Bonforte, a Vice President at Yahoo!, as their CEO. In the same month, Bill Gates gave a demo of Xobni at the Office Developers’ Conference. This led to rumors of a US$20 million acquisition by Microsoft, which the company reportedly rejected.

Cisco Systems, which has been expanding its workplace collaboration tools, has taken an interest in Xobni. Xobni announced on January 5, 2009 that it closed a $7 million round of financing, its second, with Cisco as a new investor. The company’s previous investors Khosla Ventures, First Round Capital, Baseline Ventures and Atomico also participated. The website CrunchBase has total funding at $14.6 million for the San Francisco based software development company.

There have been a lot of questions since the product release of how Xobni planned to make money and the scope of their products. In July of 2009 Xobni released a paid version of its product called Xobni Plus, offered initially for $30. Xobni Plus includes features such as advanced search, appointment search, the ability to search multiple PST archives, no ads, and one year support. In Free Studio version 4.2 Xobni is included in the .exe setup.

“Xobni” is the word “inbox” spelled backwards. It is pronounced Zob-nee.

Size : 6.3 MB

Mozilla Thunderbird is a free, open source, cross-platform e-mail and news client developed by the Mozilla Foundation. The project strategy is modeled after Mozilla Firefox, a project aimed at creating a web browser. On December 7, 2004, version 1.0 was released, and received over 500,000 downloads in its first three days of release, and 1,000,000 in 10 days.

Size : 8.8  MB