The work on AnyCase app started a few years ago, evolving significantly from its humble beginning. Today the AnyCase app is the best in-place converter on windows by far.
With 100s of programs supported for direct case conversions, AnyCase includes support for over +24 languages, a punctuation engine, a proper nouns converter, a quick replace feature, custom capitalization capabilities, customizable shortcuts, ability to convert language after you type, and much more. Thousands of users use AnyCase each day, and contribute to make AnyCase the great product that it is.
You can download the latest version here