Colaboration Tools

Yugma
Instant real-time desktop sharing, virtual meetings and web conferencing, whiteboard, annotate and ability to share files.   You can invite up to 10 people for free and provide widget for your website

Gliffy
Online  tool to create and share diagrams online.

Skype
A free communications and collaboration tool to be downloaded and installed on your computer. You can use it to have text and voice message conversations with others who have Skype for free. You can also host skypecasts, which are large scale audio conferencing calls.

Basecamp
A web-based tool that lets you manage and track projects (or simply ideas) and quickly create client/project extranets.

Jott
Jott converts your voice into emails, text messages, reminders, lists and appointments.