Online Code Review Scripts Like Udacity Please, can anyone recommend a simple online code review scripts/website similar to udacity. Instructor upload students code to the scripts, they add inline comments and can send the URL to the student. I need something very simple. No need for auto-grading. If not available, is there any library I can use to build my own?

Thanks

Attached is the screenshots for clarification.
My company has a training program for software engineering interns. A computer science problem is given to them that they have to code. Every individual intern is going to create a PR to one of our company's repository. Without merging the PR, an instructor can do a code review and add comments, just like Udacity's. IMO, GitHub is better for code review than Udacity. It has everything that Udacity has to offer and much more.

Also, they are learning the GitHub workflow which may be helpful in companies that use GitHub (like mine).