ESBPCS for VCL v6.13 has been released with support for the just released Embarcadero Delphi 10.4 Sydney. So you can add a huge collection of components and routines that add developers in Data Entry and Manipulation - including Calculators, Calendars, Date Manipulation, Statistics, Mathematics, etc...
Grab a trial from:
https://esbconsult.com/esbpcs/
Free upgrade for registered owners!