A free, open-source alternative that supports almost all compressed formats.

If you already have the file and need to access its contents, you will need an archive extractor: The standard tool for .rar files.

Files with randomized names in .rar format are frequently used to distribute adware or viruses. Always scan unknown files with VirusTotal before opening them. How to Open .rar Files

Is this related to a specific game mod, a firmware update, or a database? Knowing the context can help narrow down the correct portal.