When a collection of brushes grows to several gigabytes, it becomes difficult to understand. Googling, found a program to view brushes abrViewer.NET . Having rummaged in it, found several flaws that I decided to fix. Unfortunately, the author did not respond to the letter, so it was not possible to place his release on sourceforge.net. List of changes:
Added anti-aliasing thumbnails
Saving settings (size of thumbnails, colors, background alternation)
Save all paths so that each time you do not specify the directory or path to the file
Fixed a bug with empty space at the bottom of exported PNGs
Automatic substitution of the exported PNG name (from the name of the brush file)