Yes! Unlike most other xTuple ERP cloud hosting solutions, ISG's xtCloud service allows you to connect to your database using any PostgreSQL client. You can perform any tasks that you would be able to perform if you hosted the server yourself. This includes: backing up your database, restoring your database, creating additional databases, run custom queries, and even use third party reporting tools.
xtCloud - Can I use pgAdmin to access my hosted xTuple PostgreSQL database?