RAR is basically the native format of the WinRAR archiver. Same as other archivers, RAR files acts as data containers which stores one or more files in compressed form. For using this file, first of all you have to unpack the contents of RAR files. Rar files gets corrupted due to various reasons like unstable internet link, power failures, virus infection, download errors etc. In order to repair corrupt RAR file, you can use rar file repair software. It supports Windows XP, Windows XP SP2, Windows 2003, Windows 2000, Windows 98 and Windows Vista. The software employs effective data recovery techniques and detects the checksum when the process gets completed. It provides wide variety of features and works well with large files and supports all existing compression formats and rates.