DragonFly mailing lists are available, as
mail
or through
NNTP.
A subscription to the kernel@ mailing list is advised for developers.
Man pages can be found at http://leaf.dragonflybsd.org/cgi/web-man.
A developer resource guide is at http://leaf.dragonflybsd.org/~justin/devcentral/article.html.
DragonFly source code at:
http://www.dragonflybsd.org/cvsweb
http://fxr.watson.org/fxr/source/?v=DFBSD
DragonFly developers can be found on IRC at #dragonflybsd on EFNet.
The DragonFly Wiki contains a list of available projects.