I don't know if you know the answer to this, but why don't all courts use one standardized software? Why does every county and court seem to have their own solution?

Welcome to the world of courts. You might look at the criminal justice system, civil justice system, etc., and think, "You all do the same thing. You should be able to use the same system." However, you'll find that legislation in different areas tends to vary all the way down to the county, and in some cases, down to the city level. If you're dealing with city ordinances, they're different, their rulings are different. The methods they use to evaluate their cases are different. How they accept filings, the deadlines, timelines on those, and how they go about scheduling cases, they all tend to be different.