Photo credit: Ivan Stevanovic

1. Oovoo: Webconferencing software allows you to have video conferences with up to 5 people for free
2. Yahoo! WebMessenger: Web-based version of Yahoo Messenger allows you to communicate with people with no need to download the software
3. Imo IM: Free web-based instant messenger allows you to chat with people on the major IM networks
4. Cozimo: Web-based collaboration tool enables you and your team to collaborate on multimedia files in real-time





1. Oovoo
   
   
   
   ooVoo is a new webconferencing software available for Windows and Mac. After a quick registration, you are able to communicate with people through text-chat, video-audio conference (up to 5 people) and also to record video messages. It also supports file sharing. Free beta.
   
   http://oovoo.com/





2. Yahoo! WebMessenger
   
   Yahoo! WebMessenger is the new web-based version of the popular instant messaging tool. It offers many interesting features like typing notifications while your chat buddy is composing a message, online per-contact message history, tabbed interface for multiple chats and an animated selection of Y!'s classically fun and expressive emoticons. It also enables you to chat with Windows Live Messenger's users. Free.
   http://webmessenger.yahoo.com/





3. Imo IM
   
   Imo IM is a web-based instant messaging service that allows you to chat with your friends on the major IM networks: AIM, Google Talk, MSN and Yahoo Messenger. Group chats with different networks will be available soon. Still in alpha it is free to use.
   https://imo.im/





4. Cozimo
   
   Cozimo is a web-based collaboration tool that allows you to collaborate on multimedia files with others. After you upload videos, images or PDF files, workgroup members can be invited and annotate, draw or leave notes on this content together. They can do this on their own or they can work together with any number of workgroup members in live real-time review sessions. Free.
   http://cozimo.com/