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Why B1 Free Archiver does not create RAR files

November 29, 2013

When reading the letters from our users on our support mail we often come across the question: why B1 Free Archiver does not create RAR archives? We keep on answering that RAR format is a proprietary one but it doesn’t seem to be persuasive enough. So to dispel all the doubts concerning RAR files we’ve decided to clear everything out in this simple Q&A manner.
What is a RAR format?
RAR is the native proprietary format of WinRAR archiver. RAR format as well as WinRAR software itself was originally founded by Eugene Roshal and belongs WinRAR GmbH.
 
What does a proprietary format mean?
Proprietary format is a file format that is generally controlled by a private person or organization and is protected with patents or copyrights. The copyrights provide the exclusive control over the technology to the license holder. In this case a license holder determines the ways in which his proprietary format may be used. In case of RAR format its license allows it to be open by other software but not created.
 
How does WinRAR outline the rules of using RAR format?
Literally, RAR and WinRAR LICENSE AGREEMENT puts it like that: “Neither RAR binary code, WinRAR binary code, UnRAR source or UnRAR binary code may be used or reverse engineered to re-create the RAR compression algorithm, which is proprietary, without written permission.”
 
Summary
B1 Free Archiver developers took a noble but uneasy path of creating a top-quality software product and give it away free of charge. Otherwise we would have included the price of every proprietary format’s license we might use into every item of our software. We didn’t do so. We want B1 Free Archiver to remain open and free for everyone. Therefore you are welcomed to use all available archive formats in our software. Be sure our b1 format is of the highest quality as we have included first-rate existing technology in it as well as the results of our own tech research. Therefore we bet that available formats will satisfy every file compression need you might have.
 
So keep calm and create archives with B1 :)