VoiceAttack - VoiceAttack will take commands that you speak into your microphone

VoiceMacro - Control applications or games by voice commands and/or by the press of a keyboard, mouse button or...

VoxCommando - VoxCommando is a speech recognition and command utility for Windows. Perfect for HTPC control and home automation.

Braina - Braina (Brain Artificial) is an intelligent personal assistant software for Windows OS that allows you to interact with your computer using voice commands.

SpeechTurtle - SpeechTurtle is a voice recognition tool that has a simplified c# scripting interface.

Rhasspy - Rhasspy transforms voice commands into JSON events that can trigger actions in home automation software.