The growth of open source software has created a major change in software development. Open source binds the power of distributed peer review and transparency to create high quality, secure and easily integrated software at an accelerated pace and lower cost. Since OSS has reached a mature stage, adoption in business has no barrier. Effective communication between the OSS developer communities is one of the signposts that contribute the open source success. In this paper, a communication validation tool is proposed, that brings out contribution index, community between-ness certainty, community density of the communication network.