Metal halides are used in high-intensity discharge lamps called metal halide lamps, such as those used in  modern street lights.  These are more energy-efficient than mercury-vapor lamps, and have much better colour rendition than orange high-pressure sodium lamps. Metal halide lamps are also commonly used in greenhouses or in rainy climates to supplement natural sunlight.
Silver halides are used in photographic films and papers. When the film is developed, the silver halides which have been exposed to light are reduced to metallic silver, forming an image.
Halides are also used in solder paste, commonly as a Cl or Br equivalent.
Synthetic organic chemistry often incorporates halogens into organohalide compounds.