Hi Mirek,

If you happen to be using OS X, Fink makes it very easy to install recent 
open-source pymol.

Best regards,
        Dmitry

On 2014-04-23, at 11:43 AM, "Cygler, Miroslaw" <miroslaw.cyg...@usask.ca> wrote:

> Hi,
> I have inquired at Schrodinger about the licensing for PyMol. I was surprised 
> by their answer. The access to PyMol is only through a yearly licence. They 
> do not offer the option of purchasing the software and using the obtained 
> version without time limitation. This policy is very different from many 
> other software packages, which one can use without continuing licensing fees 
> and additional fees are only when an upgrade is needed. At least I believe 
> that Office, EndNote, Photoshop and others are distributed this way.
> I also remember very vividly the Warren’s reason for developing PyMol, and 
> that was the free access to the source code. He later implemented fees for 
> downloading binary code specific for one’s operating system but there were no 
> time restrictions on its use. 
> As far as I recollect, Schrodinger took over PyMol distribution and 
> development promising to continue in the same spirit. 
> Please correct me if I am wrong. 
> I find the constant yearly licensing policy disturbing and will be looking 
> for alternatives. I would like to hear if you have had the same experience 
> and what you think about the Schrodinger policy.
> Best wishes,
> 
> 
> Mirek
> 
> 
> 

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