Smoke Rings and the Plasma - Beginning with an interesting comparison of the physiology of a smoke ring and ball lightning, leading to the development of a device to create ball lightning, this site continues with several well-presented accounts of the phenomenon.

Ball Lightning and Fireball (Experiment) - Production of a plasma fireball (BL-like) by using microwave radiation and electric discharge.

I. Langmuir's Ball Lightning Tube - A old (1920s ?) experiment about a BL-like production with a vacuum tube.

Microwave induced plasma ball experiment - A page about experiment for production of BL-like with microwave.