Jira workflow extension cheat sheets are here

 
Jira offers several built-in conditions, validators, and post functions that help you configure workflows. However, these native tools are often not enough for automating processes using workflows. Using Jira Misc Workflow Extensions (JMWE) and its 40+ point-and-click post-functions, conditions, and validators, you can quickly configure thousands of sophisticated use cases. You can find all these extensions right within Jira's list of post-functions, conditions, and validators.

This cheat sheet lists all of the Jira & JMWE extensions available to you in Jira Cloud:

 
This cheat sheet lists all of the Jira & JMWE extensions available to you in Jira Server and Jira Data Center:

 
To learn more about Jira Misc Workflow Extensions (JMWE) for Jira Server and Data Center, visit this product page. To learn more about JMWE for Jira Cloud, visit this product page.