PyMVPA (Python MultiVariate Pattern Analysis) is a Python module intended to ease pattern classification analyses of large data sets. It provides high-level abstraction of typical processing steps and a number of implementations of some popular algorithms. While it is not limited to the neuroimaging domain, it is eminently suited for such data sets. It requires nothing but free software to run.
JagPDF is a library for generating PDF documents in C/C++, Python, and Java. It supports TrueType (subsetting) and standard 14 Type 1 fonts, font metrics, Unicode, UTF-8 and common 8-bit character encodings, images (JPEG, PNG, or custom), paths, color spaces (RGB, CMYK, CIE based, ICC profiles, indexed), encryption, bookmarks, hyperlinks, and more.
Cloud User Shell (cush) is a multi-call executable bringing RESTful cloud control to the command line, combining many useful cloud computing utilities into a single executable. It follows the Unix philosophy of writing components that work together, do one thing and do it well, and communicate over text (HTTP) streams. It is also RESTful, clearly delineating the 3 sides of the REST Triangle: verbs (e.g. GET), nouns (e.g. http://samj.net/), and content types (e.g. text/html).
simplejson is a simple, fast, complete, correct, and extensible JSON encoder and decoder for Python 2.3+. It is pure Python code with no dependencies, but includes an optional C extension for a serious speed boost. The encoder may be subclassed to provide serialization in any kind of situation, without any special support by the objects to be serialized (somewhat like pickle). The decoder can handle incoming JSON strings of any specified encoding (UTF-8 by default).