Bitser (software)

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Bitser software icon.png
Bitser 1.4.0 Running on Windows 7
Bitser 1.4.0 Running on Windows 7
Developer(s) Bazwise
Initial release January 16, 2009; 8 years ago (2009-01-16)
Stable release
1.4.0 / August 22, 2015; 2 years ago (2015-08-22)
Operating system Windows XP and later
Platform IA-32 and x64
Available in 12 languages
Type File archiver
License Freeware

Bitser is a freeware file archiver and backup software application for Microsoft Windows. It can combine multiple files and folders into a single archive file to serve as a backup copy of the original data. It uses data compression to reduce the overall size of files and can provide password protection using encryption. It also has a password manager and a MD5/SHA-1 checksum calculator to verify file identity. It uses 7-zip open source software to perform all of its underlying archiving functions except for version 5 of the RAR file format.


Bitser was first released as Beta software on January 16, 2009 and was updated every few months with bug fixes, improvements, and new features before it's first stable release on March 30, 2014[1]


  • Creates archives: ZIP, 7-ZIP, EXE (supports self extracting and split archives)
  • AES-256 bit encryption for secure backup.
  • Scans files for viruses & malware using over 50 anti-virus scanners simultaneously via VirusTotal's online scanner
  • Supports multithreading on multiprocessor or multi-core systems
  • Drag and drop support for adding and updating archives from the built in file explorer.
  • Context menu access to archives from windows explorer
  • Create or extract multiple zip files simultaneously from windows explorer.
  • Convert archives between formats (full or partial conversion from any format to zip,7-zip or exe).
  • Reports showing history of archived files, parameters used and comparisons of compression ratios, speeds, and sizes.
  • Explorer style views of archives with source and destination folders accessible from a single window.
  • MD5, SHA-1 and SHA-256 checksum calculator for windows file verification.
  • Password Manager to store multiple passwords in a single AES (Advanced Encryption Standard) encrypted file.
  • Find and delete empty folders and sub-folders from windows explorer context menu.
  • Calculate folder sizes of multiple selected folders from windows explore context menu.
  • Interface can be translated into any language.

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