CoolSpeech

CoolSpeech is a proprietary text-to-speech program for Microsoft Windows platform, developed by ByteCool Software Inc, founded in February 2001. CoolSpeech controls text-to-speech engines compliant with Microsoft Speech API to fetch and read aloud text from a variety of sources, including websites, email accounts, local text documents (.txt, .rtf, .htm/html), the Windows Clipboard, keyboard input from anywhere in Windows, and the current date and time. It can also bookmark a text source to be read aloud periodically or on-demand.
Sister product.
CoolSpeech has a sister product TextSound, which specializes in enhanced capabilities to batch convert text files into audio files, for users who need to produce spoken audio files in large volumes.