OpenBSD was one of the first open source projects to make their CVS repositories public, you can read more about it in Chuck Cranor and Theo de Raadt's paper on

OpenBSD was one of the first open source projects to make their CVS repositories public, you can read more about it in Chuck Cranor and Theo de Raadt's paper on Anonymous CVS. http://www.openbsd.org/papers/anoncvs-paper.pdf http://www.openbsd.org/papers/anoncvs-paper.pdf http://www.openbsd.org/papers/anoncvs-slides.pdf http://www.openbsd.org/papers/anoncvs-slides.pdf It makes sense, if you consider the fact they have been using for the last ~18 years.