libhogg is a C++ library for extracting information from the hogg archive used by games developed by Cryptic Studios (built and tested on Neverwinter, but I think the Star Trek Online format is the same).
This software DOES NOT modify the game or the data used by the game in any way. It is intended for educational use only.
Most of what you probably want to accomplish can be done by using the 'hogg' utility included in tools/hogg -- this is a command line program that can extract files from the archive, list all files contained in the archive, or print information about the files contained in the archive.
libhogg is licensed under the MIT license, the text of which is located within the LICENSE file that should be included with this source distribution.