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Wikidot pages can be edited using toolbars or standard wiki formatting codes.
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Highlight, mark up and comment on uploaded images, documents, videos and other materials with ReviewBasics.
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Shareflow's "flows" mimic the live stream of familiar social networks like Facebook and Twitter.
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Wrike's folder-based structure allows you to create a flexible hierarchy of projects, reference information, lists and files.
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Acrobat.com's slick, clean interface makes it easy to tell who's doing what.
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Wiggio gives you several ways to send notes to your team members.
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WizeHive offers several views of your projects to make it easy to see what you need to do next and what you're waiting on from others.
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Google Wave shows promise as a next-gen collaboration app.
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Set up your own Twitter-like status stream using Present.ly's free service.
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Project members can see messages, milestones and assigned tasks easily in Basecamp's simple, intuitive layout.
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Plentiful keyboard shortcuts make it easy to throw ideas together with MindMeister.
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TextFlow makes it easy to compare changes from multiple collaborators and pick the best version for your final document.
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Show Document's whiteboards let you throw ideas together quickly using text and graphical elements.
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Twiddla's drawing and shapes tools provide a rich interface for brainstorming.
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Writeboard's simple interface makes the quick capture of thoughts easy.
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Bubbl.us has a slick, glossy interface that makes it fun to use.
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Zoho Writer makes it easy to share documents for online collaboration.
Online collaboration on the cheap
17 Photos
Writeboard's simple interface makes the quick capture of thoughts easy.
