Vovsoft Speech to Text Converter - Automatic speech recognition to convert English, Spanish, French, Arabic, Brazilian Portuguese, Japanese, Korean, German, and Mandarin speech into text.
The current version supports IBM Cloud Language Translator API which can translate up to 500 minutes per month for free.
It Supports: Windows Windows 10/8.1/8/7 (32-bit and 64-bit)
Download: 
VovSoft Speech to Text Converter 5.4.rar - 99.1 MB
VovSoft_Speech_to_Text_Converter_5.4_Portable.rar - 248.0 MB