Multimodal Browser and Toolkit is a technology that allows the development and execution of multimodal applications written to the W3C Acknowledged Submission called XHTML+Voice (X+V). The Multimodal Browser was developed in a strategic relationship with Opera Software ASA and consists of the Opera Browser enhanced with extensions that include IBM's automatic speech recognition and text-to-speech technology. The Multimodal Toolkit is based on the Eclipse framework and the Voice Toolkit 3.1, with added plug-ins to support the X+V editor. The editors and utilities in the toolkit, presented in an integrated development environment, make it an efficient way to develop multimodal applications.

The Multimodal Browser allows viewing of and interacting with multimodal applications that have been built using X+V. When the Multimodal Browser is installed, the icon for the Opera Browser appears on the desktop, and it can be used to open the browser and run multimodal applications. Multimodal Browser and Toolkit includes the following products, which can be installed with the installation wizard: IBM WebSphere Voice Server SDK 3.1 IBM WebSphere Voice Toolkit 3.1, Multimodal Toolkit Beta and Multimodal Browser Beta.