What's the percentage of users/companies using v5.x vs 6.x vs 7.x? Is there a breakdown somewhere? Can this even be figured out?

 

I asked the question because if one creates a 7.x only commercial module, how much market share from prior versions customer base one is missing on.

we do have statistics but we don't share them publically (standard commercial reasons apply), however users are pretty good about upgrades (surprisingly good in many cases - though some of this may come from hosting providers/implementers who provide upgrades as part of their service) -we see substantial numbers of upgrades with many users being current or only lagging a few releases (there are some "orphaned" sites which never upgrade from their original versions - but as many websites have a lifespan of only a few years these tend to be removed in time - which is good from a security point of view as we rarely hear about dnn 3/4/5 sites). We also see substantial new installs (well into 6 figures per year) - and as Wes notes, newer sites tend to be the ones who are more active and thus buy more modules. If I was writing a module I would not worry about dnn 5.x, but certainly target dnn 6/7

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