Recruitr - Modern online judge tool, Online test made easy

Recruitr is a modern online judge tool. You can add coding challenges via the admin interface, specify test cases (expected input/output), and make it available for visitors to try to solve them by submitting code. Currently, recruitr supports C, C++, Haskell, Java, Javascript (Node), Perl, PHP, Python, Racket, Ruby, Scala, and Shell (Bash). The user submitted code is run in a docker container, therefore very secure.