QCG-Computing service is an open source service acting as a computing provider exposing on demand access to computing resources and jobs over the HPC Basic Profile compliant Web Services interface. In addition the QCG-Computing offers remote interface for Advance Reservations management.

QCG-Computing functionality:
 * Job submission and management
 * Proxy delegation (over GSI protocol)
 * Cluster Monitoring 
 * Advance Reservation Managament
 * Built-in Lightweight file staging mechanism
 * Integrated with the APEL system (via the [http://www.qoscosgrid.org/trac/qcg-accounting QCG-Accounting] agent)
 * Various authorization modules: grid-mapfile, LCMAPS, PAM
 * Java SDK available
 * Supported Batch Systems (using DRMAA library interface):
   * Torque
   * PBS  Pro
   * SLURM
   * SGE
   * !LoadLeveler
   * LSF

QCG-Computing is used by:
 * [http://www.qoscosgrid.org/trac/qcg-broker QCG-Broker] metascheduling service
 * [http://www.qoscosgrid.org/trac/qcg-icon QCG-Icon] Desktop GUI application

QCG-Computing can be used by:
 * Science Gateways
 * In-house built applications
 * Workflow engines
that need unified, remote interface to single HPC cluster.