Photo credit: Carl Dwyer

1. Barewiki: build a fully wiki-based website where you can collaborate and work with others
2. Voo2do: web-based organizer and calendar that tracks priority, due date, and time estimates for each task
3. Talkshoe: join, listen and broadcast a live or recorded multi-person conversation and podcasts
4. WideWord: write and share documents easily, quickly and privately
5. Yakalike: Mozilla Firefox extension that lets you chat with other users visiting the same site

1. Barewiki
   
   
   
   Barewiki is a quick and easy way to build a website where you can collaborate with others and utilize standard wiki features like revision history and full protected access. Barewiki provides a built-in "Microsoft Word style editor" allowing full use by non-technical users with no HTML know-how. Very easy to use and free.
   
   http://barewiki.com/





2. Voo2do
   
   Voo2do is a web-based group organizer and shared calendar that tracks priority, due date, and time estimates for project-related tasks. Tasks can be grouped by project, and you can view or edit a group of projects together. Voo2do supports some basic sharing of tasks. Voo2do works on Internet Explorer 6, Firefox, and Opera 8. Free to use.
   http://voo2do.com/





3. Talkshoe
   
   Talkshoe is a web service that enables you to join, listen and broadcast a live or recorded multi-person conversation, discussion group, talk show or podcast, led by a host with active participants and listeners. These conversations are called "talkcasts" and people can join them by phone or by computer. Talkcasts can be either public or private. Once the talkcast has begun, the host has total control over it and can use features such as "See-who's-talking", mute phone or chat and selectively allow users to talk who have "Requested-to-talk". Users can also earn money by hosting talkcasts: check out the TalkShoe Bucks Host Program to know more. Talkshoe is a free service.
   http://beta.talkshoe.com/





4. WideWord
   
   WideWord is an online editor that enables you to write and share documents easily, quickly and privately. When you make changes to a document, it is very handy to see what has changed and who has changed it. WideWord keeps a complete revision history and allows you to publish or share older as well as the latest version. For your public documents your readers can make public comments. You can selectively delete comment spam or unsuitable comments. WideWord also provides a RSS feed of all the changes allowing you to quickly see changes in your RSS reader or a browser such as Firefox. Free to use.
   https://wideword.net/





5. Yakalike
   
   Yakalike is a Mozilla Firefox extension that lets you chat with other users visiting the same site. You are enabled to "stay on current channel" by checking the checkbox on the top border of the Yakalike extension. This prevents Yakalike from reloading itself with a new channel whenever the URL in your browser changes. For example: you are able to surf sites like digg.com, read posted stories, but still stay in the digg.com channel. Yakalike is free to use and requires installation and Firefox.
   http://yakalike.com/