DOLFIN is the Python and C++ interface of the FEniCS project for the automated solution of differential equations, providing a consistent PSE (Problem Solving Environment) for solving ordinary and partial differential equations. Key features include a simple, consistent and intuitive object-oriented API; automatic and efficient evaluation of variational forms; automatic and efficient assembly of linear systems; and support for general families of finite elements.

GridSite was originally a web application developed for managing and formatting the content of the http://www.gridpp.ac.uk/ website. Over the past years it has grown into a set of extensions to the Apache web server and a toolkit for Grid credentials, GACL access control lists and HTTP(S) protocol operations.

PyVista is a helper module for the Visualization Toolkit (VTK) that wraps the VTK library through NumPy and direct array access through a variety of methods and classes. This package provides a Pythonic, well- documented interface exposing VTK's powerful visualization backend to facilitate rapid prototyping, analysis, and visual integration of spatially referenced datasets.

Postfix is Wietse Venema's mail transport agent, available in Debian in postfix package.

Create online, thin provisioned full and incremental or differential backups of your kvm/qemu virtual machines.

QGIS is a Geographic Information System (GIS) which manages, analyzes and display databases of geographic information.