Photo credit: AndreasG

1. Complore: Collaborative research community connects researchers in different fields through the Interet
2. Agile Messenger: Instant messenger for portable devices allows you to access to the most popular IM networks
3. Qunu: Community that provides real time support for tech-related issues by connecting people via IM
4. EventSniper: Online calendar that allows you to organize your events, publish your own calendar on your web site

1. Complore
   
   
   
   Complore is social research space that connects researchers around the world and allows them to share articles, lectures, papers and events. Complore provides students, faculty, technical experts and outstanding scholars an opportunity to work in professional collaboration with each other. Complore also offers a common space for students to comment research materials including their own. By exchanging and building upon each others' ideas, students are encouraged to work and learn together. Join it for free.
   
   http://www.complore.com/





2. Agile Messenger
   
   Agile Messenger is an instant messenger available for virtually every networked portable device that allows third party software to be installed. Agile Messenger enables you to access to MSN Messenger, Yahoo! Messenger, AIM, and ICQ. Supported platforms include: Symbian Series 60, Symbian UIQ, Microsoft Smartphone, Microsoft Pocket PC, Palm OS 3.5+ and J2ME. Agile Messenger requires download. Free to use.
   http://www.agilemobile.com/agile_messenger.html





3. Qunu
   
   Qunu is a community that provides real time support for tech-related issues by connecting people in trouble with experts who are passionate and willing to help. With Qunu you don't have to wait around for your answer: you can ask the expert directly and get your answer immediately. In addition, you can ask follow-up questions, again, in real time. Also, if you're an expert in something and want to provide help to others, Qunu requests come in through your existing IM client software. Registration is not required to use the service. Qunu is completely free.
   http://alpha.qunu.com/





4. EventSniper
   
   EventSniper is an online calendar that allows you to organize your events, add multiple external feeds to your calendar and publish it on your web site. You can subscribe to your calendar with a desktop application like Mozilla Sunbird or Apple iCal, as well as to any online calendar published using the iCal standard. Free to use.
   http://eventsniper.com/