• Single Seat License: This license offers node-locked installation on one machine with up to 32 compute core capacity, providing a cost-effective solution for individual users.
• Cluster License: This license offers node-locked installation on multiple machines with a combined installation capacity of up to 256 compute cores, catering to the needs of customers with limited budgets who still hope to capitalize the power of their computing clusters.
• Unlimited-Core Single Group License: This license remains unchanged and offers node-locked and FlexNet license keys for an unlimited number of cores within a single research group, providing flexibility and scalability for research teams.
• Multiple Research Group License: This license is designed for up to three associated groups from different departments or one department inclusively. It offers an unlimited core license with both node-locked and FlexNet licenses available, supporting collaborative research efforts across multiple teams.
• Site License: As always, this license serves users of the entire institution, ensuring that all members have access to Q-Chem's powerful computational chemistry tools.

Q-Chem is an ab initio quantum chemistry software package for fast and accurate simulations of molecular systems, including electronic and molecular structure, reactivities, properties, and structure.