Julius [1] is a pretty good offline speech recognition engine. In my tests it seems to have about 95% accuracy in grammar-based models, and it supports continuous dictation. There is also a decent Python module which supports Python 2, and Python 3 with a few tweaks.<p>HOWEVER:<p>The only continuous dictation models available for Julius are Japanese, as it is a Japanese project. This is mainly an issue of training data. The VoxForge models are working towards releasing one for English once they get 140 hours of training data (last time I checked they were around 130); but even so the quality is likely to be far less than commercial speech recognition products, which generally have thousands of hours of training.<p>[1] <a href="http:&#x2F;&#x2F;julius.osdn.jp&#x2F;en_index.php" rel="nofollow">http:&#x2F;&#x2F;julius.osdn.jp&#x2F;en_index.php</a>