Code Beautifiers are tools which format source code to use a given coding style. This includes such things as the number of tabs or spaces for indentation, whether to put scope delimiters (e.g., the bracket { and } in C and C++) on separate lines or the same lines as code and so forth. Although most code beautifiers can help organize the text of the code in a certain format and thus make it more consistent and readable, style questions are often left to individual preferences. Of course, in highly structured programming languages like COBOL, the indentation and spacing are more rigidly determined and consistent formatting is more important.

Many tools reviewed here are freeware, as these issues have been around for a long time. Sometimes beautifiers are also part of another programming tool like an editor. These resources will hopefully help you decide on the code beautifier tool that is best for you.