My custom Fritzing parts. I use these just for Breadboard views so it makes it easier to design my projects. They are NOT fully functional/correct Fritzing parts.
To edit the SVG files, I use Inkscape (https://inkscape.org/).
Fritzing only accepts a limited number of fonts in the SVG file, so install these fonts in 3rdparty\fontsandtemplates.zip
I had some troubles getting those showing up correctly on Fritzing, especially test.
To solve that, I hacked a little Inkscape extension that converts everything to paths and saves as another file with the suffix _fritzing.
The extension is in the folder com.crazygaze.inkscape.fritzing_export, and the entire folder itself should be copied to C:\Users\<USER>\AppData\Roaming\inkscape\extensions\
- If a custom part shows up as red in the breadboard, it probably means not all the connectors are mapped in the parts editor.