Photo credit: Ivan Stevanovic

1. ComBOTS: Send pictures, files or video clips to your contacts from your desktop through an avatar-based interface
2. Zoho Projects: Organize and track the work of your team within a web-based project management space
3. NumSum: Web-based service that enables you to create spreadsheets and share them with other people
4. Diigo: Add highlights and sticky notes on any web page they read

1. ComBOTS
   
   
   
   ComBOTS is a communication service that allows you to send pictures, files or video clips from your desktop through an avatar-based interface. Your contact are stored on the desktop and each one of them has a dynamic avatar: to share files with them you simply need to drag and drop files on their avatars. You can send all kind of files (up to 200MB per each) and if two ComBOTS friends are online at the same time, they can call each other for free or chat. You can buy animated characters at $0.99 in ComBOTS online store. You only need to subscribe if you like the product and start using it on a regular basis but at the moment the product is in private beta and the price has not been set yet. Free sign up.
   
   http://www.combots.com/





2. Zoho Projects
   
   Zoho Projects is a web-based service that helps teams organize their work and track progress. You can create and view tasks, milestones and meetings with the help of a dedicated calendar. It is possible to generate reports, upload files and manage them online. Zoho Projects smoothly integrates with the other tools of the Zoho Suite. Free to use.
   http://www.zohoprojects.com/





3. NumSum
   
   NumSum is a web-based service that enables you to create spreadsheets and share them with other people. You can also select and copy a range of data from Excel or Open Office Calc and past them onto your online spreadsheet. You can publish a spreadsheet on your blog or other website by pasting some HTML code and also publish your spreadsheet as an RSS feed. Free to use.
   http://numsum.com/





4. Diigo
   
   Diigo is a service that allows users to add highlights and sticky notes on any web page they read. Users can write as they wish, as private notes or public comments. Users can read public comments left by other readers of the same page and interact with them. When you highlight a word on any page a drop down menu automatically appears that lets you search for inbound links to the URL you are on in four different search engines (including Technorati and Google) and search for highlighted terms in four social bookmarking systems. Free to use.
   http://www.diigo.com/