This is a timing and lap counting program for 1-8 lanes. Best of all, it is free.

Race Coordinator is a free alternative slot car lap counting software package for the PC. It contains a wide range of racing options from the most basic Round Robin races to the most complicated multi-race events that include Practice time, one or more Qualifying races, and a Finals. Race Coordinator supports an unlimited number of drivers per race and an unlimited number of lanes on the track. Yes, that's right, unlimited.

This does cost some money, but it has been an industry standard for years. They sell complete turnkey setups including the ability to control track power and sell time on each lane.

Ultimate Racer is a lap counter, lap timer and track layout editor. It is designed for any scale, style or brand of slot track, including Scalextric, Carrera, Ninco and routed wooden tracks, from single lane rally tracks to multi-lane Championship raceways. It is based on many years of slot car experience and has been continuously upgraded according to user feedback. It provides an enormous range of tools and functionality to enhance your racing experience

LapTimer 2000 is a small MS Windows program that will count and time laps on any scale slot car track. Laps are timed with 1/1000 of a second accuracy.

LapMaster is a computer program that handles and controls the execution of a slot car race event.
*      It supports tracks with 1 to 8 lanes.

*      It times and counts the number of laps for each lane and contestant in the race.

*      Every lap is timed with the precision of 1/1000 of a second, and high scores (Track records) are recorded.

This website has a variety of resources for layout design software, car inventory management, and race management software with informative articles.