DocDiff compares two files and shows the difference. It can compare files word by word, char by char, or line by line.

It has several output formats such as HTML/XHTML, tty, Manued, or user-defined markup. It supports several encodings and end-of-line characters, including ASCII, UTF-8, EUC-JP, Shift_JIS, CR, LF, and CRLF.