Here is a list of all files with brief descriptions:

com
sun
star
uno
Any.h
Any.hxx
genfunc.h
genfunc.hxx
Reference.h
Reference.hxx
Sequence.h
Sequence.hxx
Type.h
Type.hxx
cppu
helper
purpenv
Environment.hxx
Mapping.hxx
cppudllapi.h
Enterable.hxx
EnvDcp.hxx
EnvGuards.hxx
macros.hxx
Map.hxx
unotype.hxx
cppuhelper
access_control.hxx
basemutex.hxx
bootstrap.hxx
compbase1.hxx
compbase10.hxx
compbase11.hxx
compbase12.hxx
compbase2.hxx
compbase3.hxx
compbase4.hxx
compbase5.hxx
compbase6.hxx
compbase7.hxx
compbase8.hxx
compbase9.hxx
compbase_ex.hxx
component.hxx
component_context.hxx
cppuhelperdllapi.h
exc_hlp.hxx
factory.hxx
findsofficepath.h
implbase1.hxx
implbase10.hxx
implbase11.hxx
implbase12.hxx
implbase13.hxx
implbase2.hxx
implbase3.hxx
implbase4.hxx
implbase5.hxx
implbase6.hxx
implbase7.hxx
implbase8.hxx
implbase9.hxx
implbase_ex.hxx
implbase_ex_post.hxx
implbase_ex_pre.hxx
implementationentry.hxx
interfacecontainer.h
interfacecontainer.hxx
propertysetmixin.hxx
propshlp.hxx
proptypehlp.h
proptypehlp.hxx
queryinterface.hxx
shlib.hxx
supportsservice.hxx
typeprovider.hxx
unourl.hxx
weak.hxx
weakagg.hxx
weakref.hxx
include
sal
odk
docs
cpp
osl
conditn.h
conditn.hxx
diagnose.h	Provides simple diagnostic support
doublecheckedlocking.h
endian.h
file.h	Main goals and usage hints
file.hxx
getglobalmutex.hxx
interlck.h
module.h
module.hxx
mutex.h
mutex.hxx
nlsupport.h
pipe.h
pipe.hxx
pipe_decl.hxx
process.h
profile.h
profile.hxx
security.h
security.hxx
security_decl.hxx
signal.h
socket.h
socket.hxx
socket_decl.hxx
thread.h
thread.hxx
time.h
rtl
alloc.h
bootstrap.h	The described concept provides a platform independent way to access minimum bootstrap settings for every application by explicitly or implicitly passing the values to the application
bootstrap.hxx
byteseq.h
byteseq.hxx
character.hxx
cipher.h
crc.h
digest.h
instance.hxx
locale.h
malformeduriexception.hxx
math.h
math.hxx
process.h
random.h
ref.hxx
strbuf.h
strbuf.hxx
string.h
string.hxx
stringutils.hxx
tencinfo.h
textcvt.h
textenc.h
unload.h	Backwards-compatibility remainders of a removed library unloading feature
uri.h
uri.hxx
ustrbuf.h
ustrbuf.hxx
ustring.h
ustring.hxx
uuid.h	Specification (from draft-leach-uuids-guids-01.txt )
sal
detail
log.h
alloca.h
config.h
log.hxx
macros.h
main.h
mathconf.h
saldllapi.h
types.h
typesizes.h
salhelper
condition.hxx
dynload.hxx
linkhelper.hxx
refobj.hxx
salhelperdllapi.h
simplereferenceobject.hxx
singletonref.hxx
thread.hxx
timer.hxx
typelib
typeclass.h
typedescription.h
typedescription.hxx
uik.h
uno
any2.h
current_context.h
current_context.hxx
data.h
dispatcher.h
dispatcher.hxx
Enterable.h
EnvDcp.h
environment.h
environment.hxx
lbnames.h
mapping.h
mapping.hxx
sequence2.h
threadpool.h