Here is a list of all namespaces with brief descriptions:

[detail level 123]

boost	Boost libraries.
logic
iobind
parser
std
tr1
str	String related utilities and Regular expression matching
zypp	Easy-to use interface to the ZYPP dependency resolver
sat	Libsolv interface
detail
solvitermixin_detail
functor
functor_detail	An unary functor forwarding to some other `_Functor &`
debug
exception_detail
externalprogram
base
logger
sysconfig
gettext
gzstream_detail
iostr	Iostream related utilities
log
_logtoolsdetail
detail
rw_pointer	Don't forgett to provide versions for _Ptr and _constPtr, esp
str	String related utilities and Regular expression matching
xmlout
bit
bit_detail
HACK
callback	Callbacks light
_ExternalProgram
filter
filesystem	Types and functions for filesystem operations
target
rpm
hal
kvmap
media
misc
parser
plaindir
susetags
ws
yum
xml
parse_def_assign	parseDefAssign exposed details
pool
resstatus
range_detail
applydeltarpm	Namespace wrapping invocations of /usr/bin/applydeltarpm
repo
susetags
yum
packagedelta
resfilter
traits
ui
selfilter
solver
detail
syscontent
zypp_readonly_hack
zypp_detail
thread
url	Url details namespace
ws
env