Here are the classes, structs, unions and interfaces with brief descriptions:

hydra::ArgumentParser
desktop::cache_ptr< T, KEY >
hydra::Cursor
hydra::DB
hydra::DirChangeEvent
hydra::DirDBUpdater
hydra::DirMonitor
desktop::DirView
hydra::Engine
hydra::NodePath::error
hydra::ArgumentParser::ErrorException
hydra::Record::Exception
hydra::ArgumentParser::Exception
desktop::FileEntry
desktop::FileEntryCache
desktop::FileEntryLessThan
hydra::FileHashRecord
desktop::FileItemCache
hydra::FileItemRecord
hydra::FileIterator
desktop::FileList
desktop::FileListListener
desktop::FileListLoader
desktop::FileListReloader
desktop::FileOp
desktop::FileOpDB
desktop::FileOpDisk
desktop::FileOpGuiTest
hydra::FilePathRecord
desktop::FileSystemWatcher
desktop::FlowLayout
hydra::Record::FormatException
desktop::FutureLoader
hydra::ArgumentParser::HelpException
pingapp::Host
desktop::ImageCache
desktop::InfoView
hydra::Record::IOException
desktop::ListView
desktop::LoadCache< T, LOADER, KEY >
desktop::LoadCacheBase< T, KEY >
desktop::LoadCacheEntry< T, KEY >
desktop::MainImageView
desktop::MainPlugin
desktop::MainState
desktop::MainWindow
hydra::MutexData< T >
hydra::MutexPtr< T >
hydra::NodePath
hydra::NodePath::numeric_error
hydra::Registry< BASE >::payload_t
hydra::NodePath::prop_error
desktop::QueryView
hydra::Record
hydra::Register< SUB >
hydra::Registry< BASE >
desktop::RunnableEvent
desktop::RunnableEventFunction
desktop::RunnableEventProcessor
desktop::SearchSelectView
desktop::SearchView
desktop::ShuffleView
pingapp::Site
desktop::TagEditorView
hydra::Tags
desktop::TagSelectView
desktop::ThreadedThumbCache
hydra::Thumb
desktop::ThumbsDelegate
desktop::ThumbsView
hydra::Token
desktop::FileOpGuiTest::UserCanceled
desktop::VCRView
hydra::NodePath::verify_error
hydra::Record::VersionException
desktop::View
hydra::WebExport
desktop::WideListView
hydra::NodePath::xml_error