LedgerSMB currently has 3 core members:
Everyone is welcome to become a member of the community by joining our mailing lists and/or by suggesting patches, bugs and feature requests through the Sourceforge project tracker. We have agreed to adopt the Ubuntu code of conduct for our community. Please read it if you plan on joining us.
You can also join us on IRC on irc.freenode.net: irc://irc.freenode.net#ledgersmb. It's a common hang out for LedgerSMB developers and often code direction, planning and bugs are discussed there. Read more about IRC on http://en.wikipedia.org/wiki/Irc and install a irc client and join us.
Here is an overview of recent development activity in the project:
https://sourceforge.net/projects/ledger-smb/develop/
Take a look in the help section: http://www.ledgersmb.org/help
Finally, there is of course this site. Feel free to offer to help out with maintaining documentation, posting how-to's or FAQ entries and generally helping out.
Security issues should be reported to Chris Travers. Please include "LSMB SECURITY" in the subject line.
In addition to the core infrastructure mentioned above, some users have begun to contribute sites and projects of their own. Note that these are outside the control of the core team.