I have written a VCL to FMX migration assistant which I am offering totally free and open source. I would like to offer it here for anyone who is interested. It currently is in v 2.0.1 beta test and results have been promising. It is fully documented for users and engineers. If you might be interested, the url is:
I would appreciate any comments about it, pro or con. Thanks.
It’s great to have free stuff. What is the license it’s published under? And why so anonymous 
Not really anonymous. My name is Tommy, in the USA. I am on Facebook Delphi groups with this too. I have not delved into licenses yet since it is beta but probably GNU.
I decided to go with Apache v 2.0. Fits what I am doing better. I am 75, a retired MUMPS programmer of 33 years.
Version 3.0 beta is now released. Use the link above if you are interested.
Version 4 was released last month and appears to have been received well in over 70 countries, having support for some third-party components via mapping packs. I am currently working on a companion app for it called JSON Studio, also written in FMX, which facilitates making your own mapping packs, and breaks the JSON into a schema and generates Delphi code. I am currently in the latter stages of testing and it will be in the downloads of the site above. Hopefully it will be useful to someone. Cheers.
Version 4.1.8 of the VCL to FMX migration assistant has been released along with several new items. It has been reworked and markedly improved to do more and reduce the work required by hand to move VCL toward FMX.
Reporting has been improved not only in what it reports as wrong, but also gives suggestions of how to fix it.
The guides and all supporting documents reflect all changes and improvements. Please visit the new site at https://echurchsites.wixsite.com/vcltofmx