Statistical software
I’ve recently become a convert to Stata for data analysis tasks, and it seems to be an excellent piece of software. One thing that interests me about statistical software in general is the proliferation of different programs. Aside from Stata, there’s SAS, SPSS, R and Eviews, to name a few. Unlike operating systems or wordprocessors for example, there’s no one dominant standard, and each has its own quite loyal and sizeable user base. I guess data file sharing is less common among users of this software compared to wordprocessors, but there still are some network benefits associated with support that you can get from other users of the same software. So it’s interesting that so many varieties can persist in this market but seemingly not in other software markets.