Modules in Cornerstone allow you to build information systems. Each of them have a specific purpose. A selected set of modules are chosen to fullfill the needs of our clients and made available in a Room. The power in a module based structure like Cornerstone, is that the modules are capable of using each other. For example, the payment module is used by the fundraising module, the webshop module and the membership module. Custom modules can also be built within Cornerstone to cover a client's specific needs. The following list describes these building blocks, which can then be assembled into products.