Plagiarism Prevention Moss
From MoodleDocs
A plagiarism plugin for Moodle 2.x. The underlying anti-plagiarism engine is Moss[1] which can detect plagiarism in source code and plain text files. Supports C, C++, Java, C#, Python, Visual Basic, Javascript, FORTRAN, ML, Haskell, Lisp, Scheme, Pascal, Modula2, Ada, Perl, TCL, Matlab, VHDL, Verilog, Spice, MIPS assembly, a8086 assembly, a8086 assembly, MIPS assembly and HCL2.
Check it out at http://git.io/moss