These are precompiled binaries of TFTPD32, which source code is available at https://github.com/PJO2/tftpd64.
You'll probably need the Visual Studio runtime pack: https://www.techpowerup.com/download/visual-c-redistributable-runtime-package-all-in-one/

Both 32bit and 64bit versions are included. Debug folder includes debugging stuff, while Release is probably the version you'd want to use.

These compiled binaries come with no warranty.

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