If you're open to using C#, the Microsoft speech API is pretty good (with a few caveats). I had a very targeted use-case, so I had to create a small grammar, a

If you're open to using C#, the Microsoft speech API is pretty good (with a few caveats). I had a very targeted use-case, so I had to create a small grammar, and finding documentation was awful. It was nearly flawless for native English speakers, but my French co-worker had to practice his Pittsburgh accent to get it to work for him.