Several months ago, Shana Rusonis @Atlassian has published this great post and an infographic about the popularity of Jira, and shared some of the usage stats (PDF) from Jira's largest customers.

Here are some of the findings:

• Jira has sustained over 100,000 end users for one of Jira customers;
• It can support over 5,000,000 issues in a single instance, while the average number of issues for large customers is 1,400,000;
• On average, 400 workflows (and 900 custom fields) are used by Jira's largest customers.

We are excited to announce the new release of Jira Misc Workflow Extensions (JMWE) for Jira Server, which includes many new features. With a fully redesigned look and feel and brand new documentation, it is also much easier to use. You can build sophisticated workflows with the help of any of the 30+ workflow conditions, validators, and post-functions, or customize them with your own scripts using the brand new Groovy editor and tester.