AntConc is a freeware concordance program for Windows, Mac OS X, and Linux systems developed by Laurence Anthony of Waseda University, Japan. AntConc can generate KWIC concordance lines and concordance distribution plots. It also has tools to analyze word clusters (lexical bundles), n-grams, collocates, word frequencies, and keywords.
Although the program was originally designed for use in classrooms, it has a powerful set of tools that are useful to researchers, including wildcard and regular expression searches.
One useful feature of the program is the ability to process texts in almost any language in the world, including Asian languages, such as Chinese, Japanese, and Korean. It is fully UNICODE compliant and the developer welcomes comments from users and actively works to improve the software

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