CMN3 4.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. CMN3 belongs to Games. The actual developer of the free program is CEVO LLC. CMNGuiLauncher.exe or CMNTester.exe are the common file names to indicate the CMN3 installer. The most popular version of the tool 4.0. We recommend checking the downloaded files with any free antivirus.
From the developer:
CEVO's Cheat Detection is an application designed for all PC based games supported by CEVO. To ensure legitimate competition, CEVO LLC programmers developed the CEVO Match Network (CMN), a cheat-detection software program that runs in the background while you play your matches. The CMN is the first ever program of its kind with proven success as independently tested by several eSports media organizations.
You may want to check out more software, such as Ratinator, The Great Machine or Halloween Spirit Board, which might be related to CMN3.