EncodeAnt is a freeware character encoding detection and conversion tool. The app takes an input list of text files and attempts to auto-detect the character encoding that the files use. The character encoding can also be set manually. EncodeAnt also has an option to auto-convert the character encoding of the files to UTF-8, which is a standard used in most corpus research. The converted files are saved in a separate folder leaving the original files untouched.
