WireCloud is a web-based platform for developing and executing mashups that integrate data, applications, and user interface components. It allows both technical and non-technical users to create application mashups without programming by wiring together widgets. Developers can also create custom widgets and operators to integrate backend services like FIWARE GE APIs. WireCloud supports publishing and consuming public or embedded mashups and provides tools for wiring components, managing APIs and data flows, and developing new widgets and operators.