IronWolf
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Hero Lab represents something I do not like, namely DRM, mounting costs and lack of openness. [2]
Given the above, something simple and usable would be a recommended choice.
[2] I do not begrudge people earning money for their work. However unless I can help it, I steer away from DRM stuff - when something you pay for is not really yours, it is not really yours.
I typically rebel against DRM quite a bit, even have a poster hanging in my office that says eliminate DRM. So I certainly don't blame you for holding strong on that tenet.
I finally gave up it seems in the arena of character builders. While I am not a fan of the DRM (the cost is not as much of a factor) the tool does work quite well and has saved me a significant amount of time.