Sure, it's a hard decision. My actual point was NOT VFP vs. WinDev. My actual point is that VFP is no longer the best in its class. Modern development environments are way ahead of VFP in terms of (1) enhancing your productivity (as per my example of the functionality that a modern dev-tool like WinDev brings to a table browsing operation without any coding ), and (2) new built-in tools that you can use to enhance your application for end-users (as example Social Media interface tools or using QR codes or using Blockchain technology etc. etc.). So there comes a trade-off point between the work required to re-write an application in a new dev-tool vs. the cost of the lost opportunity in respect of productivity and functionality that newer dev-tools can give you. It’s not about WinDev. It’s about the state of the art of these new dev tools that are out there.

BTW- Our main VFP applications also ran into the many tens of thousands of lines of code, a few hundred thousand. Re-writing worked for us and we are happy with the move and will not develop another app in VFP although we still maintain (sometimes enhance) several VFP apps and do not force clients to switch – we keep both legacy and new version apps in the market. And provide nearly all of our apps to the clients via cloud based solutions. So it was not a case of dropping one for another but keeping both old and new and moving more and more of our resources towards the new version while maintaining the old version.

>If it was only for me as a developer looking for my next development environment I'd probably give WinDev a try. But the thing is that we have to find the new environment that will let us port an application that has over 300000 lines of code. It could be a lot more if we didn't use a lot of classes.
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>And because of that I'm afraid to leave the Microsoft world. There are many very interesting tools like Power apps, MS Flow, SQL Server, Office 365, Teams...
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>So should we leave MS and consider Java, Javascript, Python...
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>Not easy to pick the next fantastic suite of tools that will let our new applications live long and prosper ;-)