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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
SS: Rich Geldreich sent me an IMG of the full version of the late Larry Hatch UFO database & mapping program, not just the demo version, originally licensed to David Marler. I uploaded it to the Internet Archive where you can emulate DOS and run the program in your browser. There are instructions in the description. I've also put it on GitHub in a repository here. Instructions on how to run it locally in DOSBox are in the README. Here's a video of me running the program. It's fun to play with!
Copyright 1994-2002 Larry Hatch. Larry Hatch is deceased and permission has been obtained from his family. According to David Marler, Executive Director of the National UFO Historical Records Center, "The family has verbally given permission for the database to be used. If you need to speak with them, I have their contact info." Source Last but not least, I want to thank Isaac Koi for his restless efforts in collecting and sharing UFO data with the permission of their owners. This work could not have been possible without him, who managed to run the old software, perform an textual export of the data, and got the permission from Larry's nephew (the holder of Larry's Power of Attorney) to share Larry's work. Source
Copyright 1994-2002 Larry Hatch. Larry Hatch is deceased and permission has been obtained from his family. According to David Marler, Executive Director of the National UFO Historical Records Center, "The family has verbally given permission for the database to be used. If you need to speak with them, I have their contact info." Source Last but not least, I want to thank Isaac Koi for his restless efforts in collecting and sharing UFO data with the permission of their owners. This work could not have been possible without him, who managed to run the old software, perform an textual export of the data, and got the permission from Larry's nephew (the holder of Larry's Power of Attorney) to share Larry's work. Source