Mimir

Mimir Classroom is a platform design for teaching computer programming languages. It has tools to make grading of coding assignments more efficient for instructors. The platform supports 40+ languages

This tool requires either a site license (department or university-wide) or a per-student payment: either by a department or instructor, or by the student (in which case, the bookstore would need to be involved in order to allow students to pay out of their student accounts.)

So this tool is on hold until someone decides to sponsor a contract with Mimir Classroom.