Hi @EatonCode,
@EatonCode said in Hey you want to hear a start up joke ? What do you think?:
According to my case manager it was shortly abolished after it's release.
It was an early-bird offer, available from the launch date until 19 May 2016: https://blog.qt.io/blog/2016/05/10/qt-for-start-ups-get-it-cheap-while-you-still-can/
I am actually scared that I might actually love the Qt Commercial Version but not be able to afford it.
I suggest you play around with the open source version of Qt first, to familiarize yourself with it and see if it suits your project(s). I'd imagine that porting your C# project would be a helpful learning experience.
If Qt doesn't suit you, then stick to your original tools.
If Qt does suit you, ask yourself: Are you able and willing to comply with the open source licenses for your business project(s)? If so, then simply use the free version of Qt. If not (e.g. if you want to use Qt Charts and still keep your app closed-source), then subscribe to the commercial license if it makes business sense.
See https://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/ for a list of modules that are not available under LGPL (scroll down to the "Unified Product Offering" section)
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Keep in mind also that there are 3rd-party offerings out there too, such as Qwt which provides LGPL-friendly graphing widgets so you might not need to depend on the GPL-and-commercial-only modules.
Personally, I've been using the open source version of Qt from the outset -- mainly for hobby projects, but also a few small commercial apps (using LGPL modules). I haven't used the GPL-and-commercial-only modules in any serious projects yet, so I haven't needed the commercial license yet.