Microsoft's language SDK
Microsoft has now made its language system SAPI 5.0 available for download for all interested parties. Previously it was only accessible to members of the Developer Network.
In addition to speech recognition, the software also offers the option of reading texts. So far, however, the Microsoft SDK only speaks English, Chinese and Japanese. The individual archives that are offered for download are up to 125 MB in size and the software occupies up to 450 MB on the computer. Microsoft recommends at least 128 MB memory for speech recognition and 64 MB memory for speech output. SAPI 5.0 will be included in the next Microsoft Office package.