Atlassian Bonfire is the essential tool for exploratory testing. With the browser extension, you can easily submit bugs to JIRA in context and on the fly. Instantly attach and annotate screenshots to share with your team.

Create a test session for Bonfire in JIRA
What is a test session?
Open your web site and launch the browser extension
Get the Bonfire Extension
Raise issues, attach detailed screenshots
How to annotate screenshots
Speed up issue creation by pre-filling fields using templates
How to use templates
Bonfire Welcome Video