There is a Free and Pro version of the Tag Groups plugin. This table gives an overview of the differences between the two versions.

Tag Groups Free #

Tag Groups Pro #

6 Shortcodes
5 Gutenberg Blocks
Accordion Tag Cloud
Alphabetical Tag Cloud
Alphabetical Tag Index
Tabbed Tag Cloud
Tag List
Custom Taxonomies
Backend Filters
Compatible with WPML

Tag Groups Free #

Tag Groups Pro #

21 Pro Shortcodes
18 Pro Gutenberg Blocks
Tag Meta Box
Tag Clouds
Shuffle Box
Table Tag Cloud
Tag Cloud Search
Post List
Toggle Post Filter
Dynamic Post Filter

Tag Groups Free #

Tag Groups Pro #

Multiple Groups Per Tag
Caching
User Permissions
Choose Default Groups
Integration with WooCommerce Attributes
Choose a Parent Group Level
No ads inside the plugin
Priority, personal support