I like data and charts… especially when they are updating in real time :D. Hence why I made a little tool that combines those things with TF2:

https://youtu.be/MYEpSDlQrg4

A github with download and usage information can be found here:

https://github.com/EldinZenderink/TF2LocalStats

And for the programmers who do not like the interface or only want to show specific data… you can create your own interface following this guide-ish explanation here:

https://github.com/EldinZenderink/TF2LocalStats/wiki/Developing-your-own-interface!