Skype – http://skype.com
Skype is software that enables the world’s conversations. Millions of individuals and businesses use Skype to make free video and voice calls, send instant messages and share files with other Skype users.
Meebo – www.meebo.com
Meebo is the web platform for IM on any network or site. Meebo connects you to MSN, Yahoo, AOL/AIM, MySpace, Facebook, Google Talk, and many more!
Write Board – www.writeboard.com
Write Boards are sharable, web-based text documents that let you save every edit, rollback to any version, and easily compare changes. Use write board to write solo or collaborate with others.
Google Docs – http://docs.google.com
Google Docs helps you create and share your work online and access your documents from anywhere. Manage documents, spreadsheets, presentations, surveys, and more.
Campfire – www.campfire.com
Campfire is a simple web-based real-time group chat tool for business. It makes real-time communication with 2-60 people as simple as visiting a web page.
Slideshare – www.slideshare.net
Slideshare offers users the ability to upload and share publicly or privately PowerPoint presentations, Word documents and Adobe PDF Portfolios.
Scribd – www.scribd.com
Scribd is a social publishing site, where tens of millions of people share original writings and documents. Scribd’s vision is to liberate the written word.
Digg – http://digg.com
Digg is a place for people to discover and share content from anywhere on the web. The best news, videos and pictures on the web as voted on by the Digg community. Breaking news on Technology, Politics, Entertainment, and more!
LinkedIn – www.linkedin.com
LinkedIn exists to help you make better use of your professional network and help the people you trust in return. Their mission is to connect the world’s professionals to make them more productive and successful. They believe that in a global connected economy, your success as a professional and your competitiveness as a company depends upon faster access to insight and resources you can trust.
Facebook – www.facebook.com
Facebook is a social utility that connects people with friends and others who work, study and live around them.
Twitter – www.twitter.com
Twitter is a real-time information network powered by people all around the world that lets you share and discover what’s happening now.