Description from extension meta
Automatically groups tabs based on URL regex patterns
Image from store
Description from store
This provides a simple feature which other tab grouping extensions lack. It allows a regex capture group to become the name for a new group. Simple.
In my use-case, many tabs are associated with a specific Jira task. Sometimes, I will switch between them multiple times during a day, and it's extremely useful to be able to group them automatically. For example, I have a pattern defined: (PRJ-\d+) which automatically groups tabs associated with the same ticket in the Jira project PRJ.