Bitser

Bitser is free Windows zip software for managing archives and backups. It supports ZIP, ZIPX, 7Z, RAR, ISO, MSI, VHD, GZIP, BZIP2,TAR, LZMA, LZMA2, NTFS, FAT, MBR, SquashFS, CramFS, MSLZ, CAB, CPIO, DEB, LZH, NSIS, RPM, UDF, WIM, XAR, XZ, Z. Bitser also provides a password manager, MD5/SHA checksum calculator to verify file integrity, can search for and delete empty folders and calculate folder sizes from the Windows explorer context menu. Bitser can also create encrypted backups of confidential data using AES-256 encryption and create or extract multiple zip files simultaneously