Warning: I posted this without doing a proper copyright check on the linked github repository, and it looks like this library heavily copies code from copyrighted materials.
So better not use them, for one because they contain copyrighted material, and also because the copyrighted units are not current.
At least these units are Copyright by Embarcadero:
Androidapi.JNI.Environment.pas:4:{ Copyright(c) 2014 Embarcadero Technologies, Inc. } Better_JSON.pas:5:{ Copyright(c) 2016 Embarcadero Technologies, Inc. } Bluetoothcomponentthreaded.pas:4:{ Copyright(c) 2016 Embarcadero Technologies, Inc. } FMX.Better.Controls.pas:5:{ Copyright(c) 2011-2013 Embarcadero Technologies, Inc. } FMX.Better.ListBox.pas:5:{ Copyright(c) 2011-2013 Embarcadero Technologies, Inc. } Generics.Collections.Fixed.pas:5:{ Copyright(c) 1995-2014 Embarcadero Technologies, Inc. } HTTPClient_2019.pas:6:{ Copyright(c) 1995-2018 Embarcadero Technologies, Inc. } InetWinSocketReg.pas:5:{ Copyright(c) 1995-2012 Embarcadero Technologies, Inc. } pngimage_fmx.pas:5:{ Copyright(c) 1995-2014 Embarcadero Technologies, Inc. } SocketsEditor.pas:5:{ Copyright(c) 1995-2012 Embarcadero Technologies, Inc. }