HashTab adds a new tab to the Windows file properties dialog that displays various hashes that have been calculated by the software. These hashes can then be compared with the values provided by their source to verify the file integrity and make sure that the file has not been tampered with.

This method works nicely when downloading software and files from various popular software portals as these usually display at least one sort of hash on the download page so that the users can verify the file integrity. But that is just one example. It can also be used to verify files after downloading them from friends or colleagues.

The hashes that are displayed can be altered in the program’s options. It is theoretically possible to add all 15 different algorithms to the tab. Another interesting option is the ability to compare a file on the same computer system which takes only a few seconds as a second file has to be selected from a local hard drive.

HashTab is still one of the best software programs to verify the file integrity of files on a computer system. Let us know if you find a changelog or information about the changes that the developer has made in the new version.

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It is therefor recommended to verify the file integrity of backups regularly to make sure that they can still be used to recover data if the need should arise. Nothing’s worse than to realize that the backups are unusable.

File Check MD5 is a small portable software for Windows that has been designed for that specific purpose. It can be used to compute MD5 hashes of all files in a specific root folder including subfolders. All computed MD5 hashes will be stored in a text file in that root folder.

The Check Files option can then be used to check files on the backup storage with the MD5 hashes of the original files to ensure data integrity.

One interesting option of the software program is to test the md5 hashes that have been previously computed if the text file is located in the same folder as the executable. It would then only be a matter of adding the File Check MD5 software and the text file with the MD5 hashes to the root of the backup to be able to automatically verify the file integrity.

The only thing that is missing is the ability to select a different storage location for the MD5 hashes. This would make it possible to run the software on read only devices as well.

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The software program does not act automatically. The user has to select files or folders that he wants to calculate hash values for. Once they are stored in the database it is possible to check the files at anytime to see if the file has been changed in the meantime.

A set of 21 different hash algorithms including popular algorithms like MD5, SHA-512 or CRC-32 is available and at the user’s disposal. Results can be saved or loaded so that they are available whenever they are needed.

Other interesting options include Windows Shell integration, a command line version, drag and drop support, Unicode support or search and grep using regular expressions. All in all a very sophisticated tool to check the file integrity of selected files.

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