Update README.md (#190)

README.md

@@ -252,6 +252,7 @@ List of projects that provide terminal user interfaces
 - [recoverpy](https://github.com/PabloLec/recoverpy) A TUI to recover overwritten or deleted data.
 - [rocket.term](https://github.com/gerstner-hub/rocket.term) Text based chat client for the Rocket.chat messaging solution.
 - [tcpterm](https://github.com/sachaos/tcpterm) tcpterm is a packet visualizer in TUI.
+- [terminalperiodictable](https://github.com/velorek1/terminalperiodictable) A beautiful TUI periodic table for Unix systems coded in C.
 - [termshark](https://github.com/gcla/termshark) Terminal UI for tshark
 - [thokr](https://github.com/coloradocolby/thokr) a sleek typing tui written in rust
 - [ttyper](https://github.com/max-niederman/ttyper) Terminal-based typing test