There are a lot of collaborations tools on the web, but if you need a way to quickly hack out a document with a group of people, Sync.in is your best bet.

With this instant collaboration tool there’s no need for registration: all you need to do to work on a document with someone else is send them a link. Just like that you’re working together with someone in the perfect collaborative environment. Each user is assigned their own color; all work created by that users will be highlighted with that color.

Users can see each other’s edits in real time, making this the perfect way to jointly work on a document from far away.

If you want to discuss the particulars of the project you’re working on, there is a chat function in the same window just to the right of the document. This allows for discussion without disrupting the content.

If you want a desktop client, you can download a program for Linux, Mac and Windows. This will allow you to create documents with the click of a button, and also to quickly open any of your documents (in a web browser.)

All the functionality described here is available for free. Business owners will be interested to know that a pro version, for $2 per month per user, offers additional features including a custom domain (eg. companyname.sync.me), publicly visible notes, bulk export and more.

Features

• Collaborate on documents online.
• Changes made are reflected instantly, color coded by user.
• Chat embedded into window.
• Free version quite functional; Pro version offers business-centric functions.
• Similar sites: Notapipe, CollabEdit and AmyEditor.

Check out Sync.in @ www.sync.in