diff --git a/README.md b/README.md
index 3104db7..81c0973 100644
--- a/README.md
+++ b/README.md
@@ -320,12 +320,13 @@ Only main chapters:
:small_orange_diamond: gperftools - high-performance multi-threaded malloc() implementation, plus some performance analysis tools.
:small_orange_diamond: glances - cross-platform system monitoring tool written in Python.
:small_orange_diamond: htop - interactive text-mode process viewer for Unix systems. It aims to be a better 'top'.
+ :small_orange_diamond: nmon - a single executable for performance monitoring and data analysis.
:small_orange_diamond: atop - ASCII performance monitor. Includes statistics for CPU, memory, disk, swap, network, and processes.
:small_orange_diamond: lsof - displays in its output information about files that are opened by processes.
:small_orange_diamond: FlameGraph - stack trace visualizer.
:small_orange_diamond: lsofgraph - small utility to convert Unix lsof output to a graph showing FIFO and UNIX interprocess communication.
:small_orange_diamond: rr - is a lightweight tool for recording, replaying and debugging execution of applications.
- :small_orange_diamond: Performance Co-Pilot - a system performance analysis toolkit.
+ :small_orange_diamond: Performance Co-Pilot - a system performance analysis toolkit.
:small_orange_diamond: hexyl - a command-line hex viewer.