Background and history

Unlics is MarkzCorp's checksum engine.

Unlics wasn't 's an independent product until 2009 when its first beta release came to life and, in 2016, it was released to the general public, free of charge, in a DEMO version.

The technical differences between the DEMO and the FULL versions, in this case, are restricted to the top performance of them, keeping no differences at all in the feature list.

Key features

"Unlics" is a shortening for "unlimited checksum", checksummers are one very common "double check" technology, widely spread these days.

Checksumming allows one to verify the authenticity of some downloaded material as the owner of a file being published for download (like ourselves) can provide you with one "number-code" which is exclusively related to that file (pretty much no other file in the world will have the exact same code) and the downloader can check at its location whether the downloaded file is intact, by running the same checksum procedure the same way the owner did (the "number-code" obtained must be exactly the same).

Unlics most important special feature isn't available in the DEMO version, which is it's outstanding parallel performance, but, the easy to use and lightweight are right there.


At the present, there are Unlics DEMO versions in command-line mode, for 32 bit MS Windows and virtually any Linux flavour.

The FULL version, however, is available for pretty much any hardware architecture and operating system available in the market.

Related products

Unlics is embedded onto pretty much every other MarkzCorp product, for instance: Unlico, Unlich, Unlisc and others.

Try it

In March 2016 we've release to the general public, the first demonstration version of Unlics.

You can get Unlics' DEMO version here.

Learn it

There isn't much to learn, just five simple steps:

  • Run a command prompt shell.
  • Go to the folder/directory where you have saved the downloaded Unlics executable.
  • Run "unlics" followed by the name of the file you wish to checksum (do not forget to type the full path to the file).
  • Take note of the "Unlics code" for the given file.
  • Verify at the file publisher (the file source) whether the "Unlics code" is the exact same as you got locally. If they are the same, the file is the exact same as in the source, if it isn't delete it right away.


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