for future improvements and inspiration we can gather all good examples of programs which have good user experience here:
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Description
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Please take a look at the concepts here https://wiki.apertus.org/index.php/Wifi_Remote
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@BAndiT1983 this can be inspirational: a much simpler app than OC that does only file copy, but in a nice graphical way: https://hedge.video/how-it-works
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Looks very nice, but we should think of some concept which is not copying same behaviour, as it could cause us a lot of (legal) trouble. UI is not the big problem for OC, but the backup logic and verification is very important. We can think of some web UI in the future, if you want to have fancy stuff like animations.
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Another good example in functionality and usability: ShotPut Pro
https://www.imagineproducts.com/