Though console applications are open source (PAR clients are GPL), GUI application is closed source. Console applications and some UI resource are open source.




Par-N-Rar is described as 'Graphical utility which accepts a directory as input and will repair/verify any PAR/PAR2/SFV/MD5 files in that directory. Once it verifies a set of files, it will attempt to unRAR them. Once it finishes unRARing a RAR archive, it will (optionally) remove the' and is an app. There are more than 10 alternatives to Par-N-Rar for Windows, Linux, Mac, BSD and Python. The best Par-N-Rar alternative is MultiPar, which is free. Other great apps like Par-N-Rar are Hash-o-matic, checksum, ParPar and DataHealthCheck.
Though console applications are open source (PAR clients are GPL), GUI application is closed source. Console applications and some UI resource are open source.




Simple hash validator allowing to compare two files, generate the checksum of a file and verify if a hash matches a file.



checksum is an easy-to-use, no-nonsense BLAKE2, SHA1 & MD5 hashing program for Windows, capable of creating & verifying hashes of files and folders, even whole drives, with just one or two clicks. It is robust, lightning fast, intuitive, and completely customizable.




ParPar is a high performance, multi-threaded PAR2 creation tool and library for node.js. ParPar does not verify or repair files, only creates redundancy. ParPar is a completely new, from ground-up, implementation, which does not use components from existing PAR2 implementations.

DataHealthCheck is a portable app to check your files for corruption or display their md5/sha1 hash. It is faster than other apps because it checks for corrupted files and update hashes of changed files in one pass.



ICE ECC is a file verification and repair tool. ICE ECC allows you to protect your important files and sensitive data against digital corruption using Reed-Solomon codes
MacPAR deLuxe is a utility program that runs on the Apple Macintosh. It is useful to you if you download (or upload) binary files from internet newsgroups (a.k.a. “Usenet”).
This is a fork of par2cmdline which replaces core computation routines with ParPar’s processing backend, improving par2cmdline’s performance on x86/ARM platforms.
This software allows to generate MD (Message Digest) and SHA hashes from a file or files or files in a directory. Checksum is an value calculated from a content of file by special algorithm. You can also verify the file integrity of the downloaded document or program.


Suite of tools for file fixity (data protection for long term storage) using redundant error correcting codes, hash auditing and duplications with majority vote, all in pure Python.