For sales inquiries, price quotations and purchase orders, etc:
Worldwide: OpenMOPAC.net Email:
India: Seascape Email: firstname.lastname@example.org
Japan: MOLSIS Inc. Email: email@example.com
China: Hongcam Email: firstname.lastname@example.org
Academics: Free Downloads...
MOPAC2016™ is available as a standalone command-line driven application for Windows®, Linux and Macintosh. For versions of MOPAC2016™ bundled with graphical user interfaces, click here.
MOPAC2016 (Windows, Linux, Mac) Acad*. Govt. Comm.
1 permanent license (1 node) Free $2,500 $5,000
1-year Support** & updates (1 node) $1,000 $1,000 $1,000
5 permanent licenses (5 nodes) - $5,000 $10,000
1-year Support** & updates (5 nodes) - $2,000 $2,000
Annual site-license & support - $5,000 $10,000
Permanent site-license (executable) - $10,000 $20,000
Permanent site-license (source-code) - $10,000 $20,000
Permanent site-license (source & executable) $12,500 $25,000
MOPAC2009 for CAChe, Windows $1,000 $2,500 $5,000
Permanent single node license
MOPAC2009 for CAChe, Windows $2,000 $5,000 $10,000
PARAM (1 node) $30,000 $40,000 $50,000
* The free Academic license is only for non-profit, non-proprietary use.
A new copy of the executable needs to be downloaded annually.
**Annual Support includes prompt responses to email questions, usually within two working days, and software version updates (including MOPAC2016™) when available. Current MOPAC2012™ and MOPAC2016™ customers without a Support contract, may upgrade to the latest version for 50% of the current list price. The first year of annual support is included free with product purchase.
Multi-core single-chip processors (e.g. dual core and quad-core) are considered as 1 node for MOPAC licensing purposes.
MOPAC2016 uses a click-thru end-user license agreement
Installation, FAQs, & troubleshooting
Online MOPAC manual
Online PARAM manual
Web support request form Email support request
Release notes & current version number
Download latest version of MOPAC
Download MAKPOL, a free utility for constructing extended solids from
a unit cell for input into MOPAC
Download BZ, a free utility for analysing Brouillin Zone band structure
in the output of MOPAC calculations on solids