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Background: I'm working on a computational chemistry / drug discovery project and am interested in testing out different methods for doing QSAR/QSPR calculations on a set of published compounds I have found.

A few papers reference an interesting piece of software referred to as "Quasar" or "QuasarX" capable of building something called a quasi-atomistic binding-site surrogate model. Citations of this software primarily point to this publication.

Problem: This application seems very interesting, but I haven't been able to find any actual information on the availability of Quasar, though papers have been published using it as recently as 2024.

Goal: Can anyone provide information on Quasar's availability?

Thank you very much in advance!

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Quasar$^X$ has been hosted by this domain: http://www.biograf.ch, which unfortunately seems to be down. Luckily, you can still use Wayback Machine to access a copy of the site.

You can download Quasar 5.2 either by accessing the site via Wayback Machine, or by using this link:

http://web.archive.org/web/20230328145629/https://www.biograf.ch/downloads/QuasarX_operatingsystem.zip

where you'll need to replace 'operatingsystem' with either 'Macintosh', 'Windows' or 'Linux'.

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  • $\begingroup$ Amazing! I can't thank you enough! I had never even though of using the Wayback Machine. Such a good idea! $\endgroup$
    – Paul
    Commented Aug 16 at 14:48

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