qubx.tifffile: Read and write image data from and to TIFF files.
qubx.toolspace: Widget with switchable mouse controllers (Tools) and transparent
overlays and layers.
qubx.tree: Classes for reading and writing all QuB binary files.
qubx.treeGTK: pygtk support for qubtree: clipboard and visual editing.
qubx.tree_native: Wrapper for qubtree shared library (gui mainly uses numpy variant
from qubx.tree); this is the 'native' flavor, unless you have the
obsolete _qubtree extension library.