gwforge generates mock gravitational wave detector data using user-defined population and arbitrary detector sensitivity. The code can, for example, simulate a wide range of binary source populations by specifying parameters such as the local merger rate, distribution functions, and additional keyword arguments, and simulate coloured Gaussian or zero noise using a provided or default power spectrum to represent the detector noise. gwforge can also inject gravitational wave signal(s) into the generated detector data using the previously generated population and a chosen waveform model.