ASN.1 library for Python: A ASN.1 types and codecs implementation. [Open Source, BSD]cx_bsdiff: A Python extension module for binary patching and diffing. [Open Source, BSD license]ID3.py: A simple Python module for retrieving and setting ID3 tags on MP3 compressed audio files through an object-oriented interface. [Open Source, GPL]LZO: Python bindings for the LZO real-time data compression library. [Open Source, GPL]PyLZMA: Platform independent Python bindings for the LZMA compression library. [Open Source, LGPL]tarfile: A pure Python module for reading and writing .tar and tar.gz files. [Open Source, BSD-like]The ReportLab Toolkit: A PDF generation library. [Open source, BSD-like]