Here are the packages with brief descriptions (if available):

__gnu_cxx
anonymous_namespace{wrap.cc}
joshua
joshua.corpus
joshua.corpus.syntax
joshua.decoder
joshua.decoder.chart_parser
joshua.decoder.ff
joshua.decoder.ff.lm
joshua.decoder.ff.lm.berkeley_lm
joshua.decoder.ff.lm.bloomfilter_lm
joshua.decoder.ff.lm.buildin_lm
joshua.decoder.ff.lm.kenlm
joshua.decoder.ff.lm.kenlm.jni
joshua.decoder.ff.lm.srilm
joshua.decoder.ff.similarity
joshua.decoder.ff.state_maintenance
joshua.decoder.ff.tm
joshua.decoder.ff.tm.format
joshua.decoder.ff.tm.hash_based
joshua.decoder.ff.tm.packed
joshua.decoder.hypergraph
joshua.decoder.segment_file
joshua.lattice
joshua.metrics
joshua.oracle
joshua.pro
joshua.subsample
joshua.tools
joshua.ui
joshua.ui.hypergraph_visualizer
joshua.ui.tree_visualizer
joshua.ui.tree_visualizer.browser
joshua.util
joshua.util.io
joshua.util.quantization
joshua.zmert
lm
lm::anonymous_namespace{read_arpa.cc}
lm::base
lm::ngram
lm::ngram::anonymous_namespace{binary_format.cc}
lm::ngram::anonymous_namespace{build_binary.cc}
lm::ngram::anonymous_namespace{model_test.cc}
lm::ngram::anonymous_namespace{quantize.cc}
lm::ngram::anonymous_namespace{search_hashed.cc}
lm::ngram::anonymous_namespace{vocab.cc}
lm::ngram::detail
lm::ngram::detail::anonymous_namespace{model.cc}
lm::ngram::trie
lm::ngram::trie::anonymous_namespace{bhiksha.cc}
lm::ngram::trie::anonymous_namespace{search_trie.cc}
lm::ngram::trie::anonymous_namespace{trie.cc}
lm::sri
lm::sri::anonymous_namespace{sri.cc}
lm::sri::anonymous_namespace{sri_test.cc}
std
util
util::anonymous_namespace{bit_packing.cc}
util::anonymous_namespace{bit_packing_test.cc}
util::anonymous_namespace{ersatz_progress.cc}
util::anonymous_namespace{exception.cc}
util::anonymous_namespace{file_piece.cc}
util::anonymous_namespace{file_piece_test.cc}
util::anonymous_namespace{joint_sort_test.cc}
util::anonymous_namespace{key_value_packing_test.cc}
util::anonymous_namespace{mmap.cc}
util::anonymous_namespace{probing_hash_table_test.cc}
util::anonymous_namespace{sorted_uniform_test.cc}
util::detail