BZ2 are compressed files generated using the BZIP2 open source compression method, mostly on UNIX or Linux system. It is used for compression of a single file and is not meant for archiving of multiple files. Learn more about this file format here.

A GZ file is a compressed archive that is created using the standard gzip (GNU zip) compression algorithm. It may contain multiple compressed files, directories and file stubs. Learn more about this file format here.

A Gzip file is a compressed archive that is created using the standard gzip (GNU zip) compression algorithm. It may contain multiple compressed files, directories and file stubs. Learn more about this file format here.

Files with .rar extension are archive files that are created for storing information in compressed or normal form. RAR, which stands for Roshal ARchive file format. Learn more about this file format here.

7z is an archiving format for compressing files and folders with a high compression ratio. It is based on Open Source architecture which makes it possible to use any compression and encryption algorithms. Learn more about this file format here.

Files with .tar extension are archives created with Unix-based utility for collecting one or more files. Multiple files are stored in an uncompressed format with the support of adding files as well as folders to the archive. Learn more about this file format here.

A file with .zip extension is an archive that can hold one or more files or directories. The archive can have compression applied to the included files in order to reduce the ZIP file size. Learn more about this file format here.