CSV (short for Comma Separated Values) is a plain text file format that uses comma, Tab or other delimiters to separate the file content. It's very common to use a .csv file to store the tabular data. For example, a lot of small programs use the CSV file to keep their configuration and data. In general, the most convenient way to view and edit a CSV file is really to use Microsoft Excel. However, it has a disadvantage - the edited and saved CSV file format is not UTF-8 by default. And, most of other third-party CSV editors do not support UTF-8 format well either.