The big web conferencing vendors – Adobe, Cisco, Citrix, IBM and Microsoft - all offer some ability to create and consume on-demand content, according to Pray. But it's the primary focus for vendors like Brainshark and BrightTalk, he says.

The key changes in Brainshark Enhanced Mobile are a new Adobe Flash-based player for Android and Palm webOS devices, and changes to Brainshark's iOS app (launched in January).

Other new features include more information about mobile viewing patterns, such as the total time a user spends watching the video presentation and "clickpath tracking," which traces how users navigate through the elements of the presentations. Presentation authors now can include interactive polls and surveys in their projects. Finally, Brainshark created an interface, based on the SCORM protocol, to link presentations with third-party learning management systems.

Brainshark, of Waltham, Mass., was founded in 2000 and developed a software-based service to deconstruct files such as a PowerPoint presentation into its constituent objects, such as diagrams, photos, animations, and text, and index them.  Using the online tools, authors can combine them into presentations that seem more like custom-made videos, which are costly to produce.

The idea, says CEO Joe Gustafson, is to let enterprises uses existing static content to create more effective video-like presentations. The service is used in marketing, customer relationship management, partner communications, training and education applications.