The alternative is Bing&#x27;s voice recognition API. You get a decent number of free requests and then have to pay.<p>Google have on too but there is a quota limit of 50 requests per day with no possibility to pay for more, unless you use it via Android or HTML, in which case it is unlimited (though I bet they&#x27;ll block you if you use too much).<p>There aren&#x27;t any good offline voice recognition systems that I know of.