Database manipulation tool for python which can be used as standalone library to manipulate relational databases. SQLalchemy provides core python based sql expressions and object oriented python based ORM. it also provide high level declarative sysntax for ORM for simplicity.


Software library for numerical computation using data flow graphs. Nodes in the graph represent mathematical operations, while the graph edges represent the multidimensional data arrays (tensors) communicated between them.


Python library that allows you to define, optimize, and evaluate mathematical expressions involving multi-dimensional arrays efficiently. It can use GPUs and perform efficient symbolic differentiation.


A version of the scalable, non-blocking web server and tools that power FriendFeed. The FriendFeed application is written using a web framework that looks a bit like or Google's webapp, but with additional tools and optimizations to take advantage of the underlying non-blocking infrastructure.


Event-driven network programming framework written in Python and licensed under the MIT License. Twisted projects variously support TCP, UDP, SSL/TLS, IP multicast, Unix domain sockets, a large number of protocols, and much more.


Software, program or system that implements, manages and controls multiple virtual environment instances. A tool to create isolated Python environments. Virtualenv will let you define isolated Python runtime environments without harming the root or system python installation.


A major goal of web2py is ease of use, from setup, to learning, to coding, to distribution, to deployment. It manages to achieve that goal quite well while offering a very rich feature set and allowing a lot of flexibility.

Web framework for Python that is as simple as it is powerful. is in the public domain; you can use it for whatever purpose with absolutely no restrictions.


GUI  toolkit for Python that is a wrapper around the wxWidgets C++ GUI library. wxPython provides a large variety of window types and controls, all implemented with a native look and feel (by using the native widgets) on the platforms upon which it is supported.

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