Open INDEX File
INDEX files, as the name implies, are used to store keyword indexes for Eclipse's distributed help index feature, which is a cross-platform integrated development environment that supports various programming languages.
Eclipse comes as a multi-language environment, used for programming applications in JAVA, Ada, C, C ++, COBOL, Perl, PHP, Python, R, Ruby, etc.
Eclipse also supports plugins to add new functions called plugins. It is available for Microsoft Windows, Mac, Linux, and Solaris.
The INDEX files store the indexes of the words that allow indexed searches in the eclipse help files, to facilitate the conflict resolution process.
To open and operate on INDEX files, you must have Eclipse installed on your system: