Copyright is reserved on all JESS software, documentation and data. Permission to use JESS is granted only on the condition that you agree to the following measures for the protection of this copyright.

Whilst you may use JESS material for your own personal teaching and research in the area of solution chemistry, you may not make copies of JESS software or data for any other purpose. You must take all reasonable steps necessary to prevent the JESS material you use from being obtained by any third party. Neither may you permit the data supplied to be incorporated into other computer programs or packages. No rights to modify, make derivative works or extract parts of JESS software are granted except by explicit agreement of the Authors/Owners in writing.

Distribution of JESS software, in whole or in part, to computer systems other than those licenced by the Owners is prohibited. No 'reverse engineering' or decompiling of JESS software is permitted except where, and only to the extent that, such is expressly allowed by applicable law notwithstanding this limitation.

The Authors believe that the Owners hold true and lawful title to all JESS software. However, no warranty concerning their entitlement is expressed or implied.

Please acknowledge your use of JESS by appropriate citations of our publications and/or this website.