Blackwood - Archive of obsolete content
active subprojects webclient java dom api java pluglet api defunct subprojects blackconnect -- blackconnect was superseeded by javaxpcom ...

Mozilla release FAQ - Archive of obsolete content
what subprojects are there for documentation people?

Firefox
learn how to create add-ons for firefox, how to develop and build firefox itself, and how the internals of firefox and its subprojects work.