Add Fretboard, Metronome & GMetronome (#270)

Co-authored-by: Loïc Reynier <[email protected]>

README.md

@@ -21,6 +21,7 @@
     - [Ambient Sounds](#ambient-sounds)
   - [Audio Workstations (DAWs)](#audio-workstations-daws)
   - [Audio Tools](#audio-tools)
+  - [Music Software](#music-software)
 - [Video](#video)
   - [Video Players](#video-players)
   - [Live Stream Viewers](#live-stream-viewers)
@@ -203,8 +204,6 @@ this list aims to be broader and include apps from various other ecosystems in v
 - [Asunder](https://gitlab.gnome.org/Salamandar/asunder) - CD ripper and encoder `#c` `#gtk3`.
 - [Audio Sharing](https://apps.gnome.org/AudioSharing) - Application to share audio playback in the form of an RTSP stream `#rust` `#gtk4` `#libadwaita` `#gnome`.
 - [Cavalier](https://github.com/NickvisionApps/Cavalier) - Audio visualizer based on [CAVA](https://github.com/karlstav/cava) `#csharp` `#gtk4` `#libadwaita`.
-- [Chromatic](https://github.com/nate-xyz/chromatic) - Instruments tuner `#rust` `#gtk4` `#libadwaita`.
-- [Drum Machine](https://github.com/Revisto/drum-machine) - Drum machine application to create and play drum beats `#python` `#gtk4` `#libadwaita`.
 - [Ear Tag](https://apps.gnome.org/EarTag) - Tag editor designed to edit singular files `#python` `#gtk4` `#libadwaita` `#gnome`.
 - [EasyEffects](https://github.com/wwmm/easyeffects) - Audio effects manager (limiter, convolver, equalizer, autovolume and more) for PipeWire applications `#c++` `#gtk4` `#libadwaita`.
 - [Lyrebird](https://github.com/lyrebird-voice-changer/lyrebird) - Voice changer based on SoX `#python` `#gtk3`.
@@ -216,6 +215,13 @@ this list aims to be broader and include apps from various other ecosystems in v
 - [SoundConverter](https://soundconverter.org) - Multithreaded sound converter with compatibility with everything that GStreamer reads and automatic renaming `#python` `#gtk3`.
 - [Tagger](https://github.com/NickvisionApps/Tagger) - Music tag (metadata) editor `#csharp` `#gtk4` `#libadwaita`.
 
+### Music Software
+
+- [Chromatic](https://github.com/nate-xyz/chromatic) - Instruments tuner `#rust` `#gtk4` `#libadwaita`.
+- [Drum Machine](https://github.com/Revisto/drum-machine) - Drum machine application to create and play drum beats `#python` `#gtk4` `#libadwaita`.
+- [Fretboard](https://apps.gnome.org/Fretboard) - Software for guitarists to look up guitar chords `#rust` `#gtk4` `#libadwaita` `#gnome`.
+- [GMetronome](https://gitlab.gnome.org/dqpb/gmetronome) - Metronome and tempo measurement tool with several customization options `#c++` `#gtk3`.
+- [Metronome](https://gitlab.gnome.org/World/metronome) - Metronome application that beats the rhythm to keep the tempo `#rust` `#gtk4` `#libadwaita`.
 
 ## Video