Moodle Plugins directory: Plugin type: Quiz | Moodle.org
Quiz 
There's a number of ways to extend quizzes, such as adding new reports and questions types.
Join the discussions about quiz plugins in the Quiz activity forum.
Related plugin types
Quiz access rules (24)
Plugins for controlling access to quizzes
Quiz reports (22)
Quiz reports show results and statistics
Question types (87)
New types of questions
Plugin type for extending question bank functionality.
Question behaviour (25)
We question your behaviour!
Question formats (21)
Question formats for import/export