Vello: Make conference calls quick and easy. Pushes the call rather than waiting for people to call in. Made a call to 69 people here at the show. Interface is both Web-based and mobile, so you can make conference calls from you cell phone. Didn't mention how calls are charged.
Tubes: Share files easily without managing and downloading them to a file sharing site. Change a file and it automatically updates. Works offline, too. Not sure we need one more way share files, but it looked pretty easy to use.
MyQuire: Lightweight project management with social networking features. Create schedule, organize documents.
InstaColl: LiveDocuments, a Microsoft Office add-in that allows file sharing. For those who don't have Office, there's a flash viewer. Essentially puts the document in a non-Office format.
Apprema: StarMail is a collaborative e-mail system. Need five people to write one e-mail, StarMail is for you. Apprema has other applications like sending business gifts. The e-mails are html documents. Extreme Networks is a customer and testified to the use of Apprema to differentiate a business to its customers.
Prolify: More e-mail collaboration with project flow management.
Dimdim: Free hosted web meetings. WebEx is dead, says the founder -- his system supports two-way audio chat as well as application sharing and whiteboard. The audio on the demo was kind of poor. The company's investor had previously invested in hotmail and skype -- he recorded a message with Dimdim.