The TPX3Cam is a fast optical camera for time stamping of optical photons. It is based on a new silicon pixel sensor, which in combination with the Timepix3 ASIC and readout, is suitable for a wide range of applications which require time-resolved imaging of electrons, ions or single photons. The TPX3Cam can be easily integrated both in table-top lab setups, as in synchrotron or free-electron-laser environments.