In the ever-expanding universe of audio and web conferencing services, Twiddla, a free white board and audio conferencing tool is now in final beta and available for public use. Twiddla does not require sign-ups and users can instantly turn any website, photo, or graphic into a canvas for instant mark-up and discussion.

Winner of this year’s Technical Achievement award at the SXSW festival, Twiddla doesn’t have the features of more robust interactive web conferencing services, but its ease of use and quick setup make it a stand-out.

As soon as you launch Twiddla, you are presented with a blank whiteboard, which allows you to draw shapes, lines, and text boxes, or even upload media and load external websites to share with your meeting participants. The Twiddla user’s drawings are then overlaid on the media file/website. Another extremely useful feature of Twiddla is that you can start a voice chat using your computer’s on-board microphone enabling an instant audio web conference call.